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Single carrier frequency domain equalization
Single carrier frequency domain equalization. Because it does not have Aug 18, 2009 · In this paper, we present coherent optical single carrier transmission (COSC) using overlap frequency domain equalization (OFDE) for the chromatic dispersion (CD) compensation. The sin-gle carrier modems with frequency-domain equalization have similar performance and complexity as orthogo-nal frequency-division multiplexing, yet less sensitive to radio frequency impairments. It can solve the time domain equalization technique has the disadvantages of high computational complexity. 2 Simplified communication chains of OFDM (top figure) and SC-FDE (bottom figure) Frequency-Domain Equalization in OFDM and Single-Carrier Modulation, Fig. Logothetis,Afif. 58, NO. We show that when com-bined with frequency domain equalization (FDE), this SC approach delivers performance similar to OFDM, with essentially the same overall com-plexity. In this overview paper we survey recent results on single carrier systems with frequency domain equalization (SC-FDE), including Nov 30, 2022 · In this paper, the channel estimation and signal-to-noise ratio (SNR) estimation technique of single-carrier frequency domain equalization (SC-FDE) system under low SNR in aeronautical multipath channel are studied, a SNR estimation algorithm which is easy to implement in engineering and an improved LS channel estimation algorithm based on Single carrier (SC) transmission with frequency domain equalization (FDE) has drawn great attention as an attractive alternative to OFDM, especially in the uplink of radio frequency communications, and underwater acoustic communications [6]– [8]. The TFD-TE scheme is to couple a multi-channel frequency domain equalizer with phase rotation compensation and a low-order single . In this paper, a time-frequency domain turbo equalization (TFD-TE) scheme is proposed for single-carrier modulation. nonlinearities, and high sensitivity to carrier frequency offsets (CFOs) [6]. Apr 26, 2018 · Single-carrier frequency-domain equalization (SC-FDE) with multi-input multi-output (MIMO) has been recognized as an alternative technology to orthogonal frequency-division multiplexing with MIMO for broadband wireless communication systems because of its single carrier transmission advantages. Single-carrier frequency-domain equalization (SC-FDE) is an effective algorithm against inter-symbol interference, which has been widely used in wireless communication systems. In the proposed system, multiple layers are encoded and interleaved together, using one encoder and one interleaver, and then Aug 26, 2008 · The authors discuss the potential of OFDM signaling, with its limitations and inherent problems, as well as another potential technique that has so far been overlooked: single-carrier transmission with frequency- domain equalization, and introduces coded-OFDM (COFDM), which makes use of channel coding and frequency-domain interleaving. Recent research has shown that single carrier frequency domain equalization (SC-FDE) is an attractive technology for We propose an Alamouti-like scheme for combining space-time block-coding with single-carrier frequency-domain equalization. A related concept is the combination of a single carrier transmission with the single-carrier frequency-domain-equalization (SC-FDE) scheme. The proposed FDE-aided SC-IM scheme outperforms the conventional FDE-aided SC scheme, while achieving a comparable low level of detection Frequency-Domain Equalization in OFDM and Single-Carrier Modulation, Fig. earlier 802. In this paper, we investigate its combination with Jul 21, 2015 · Single-carrier frequency-domain turbo equalization (SC-FDTE) is investigated, with the focus on the design of soft-decision frequency-domain equalizer (SD-FDE) May 18, 2022 · The continuous phase modulation (CPM) technique is an excellent solution for underwater acoustic (UWA) channels with limited bandwidth and high propagation attenuation. To simplify the computational operations at the transmitter and the sensory nodes, a single carrier frequency domain equalizer is proposed and amplify-and-forward protocols are employed. [10] The single carrier transmission, unlike SC-FDMA and OFDM, employs no IDFT or DFT at the transmitter, but introduces the cyclic prefix to transform the linear channel convolution into a circular one. For this reason, single-carrier with frequency-domain equalization (SC-FDE) and OFDM are nowadays the most popular broadband transmission techniques. se Abstract— In this paper, single carrier frequency domain Key words Overlap frequency domain equalization, single carrier transmission, SINR. zetterberg@s3. The received data stream is divided into consecutive blocks, and each block is equalized in the frequency May 7, 2014 · Single-carrier frequency domain equalization (SC-FDE) has been shown to be an attractive transmission scheme for broadband wireless channels. To solve this problem, an algorithm for prefiltered single-carrier frequency-domain equalization (PF-SCFDE) is presented Aug 21, 2018 · However, FDEs can also be employed with single-carrier (SC) modulations and have been shown to be a great alternative to conventional, time-domain equalizers (TDEs). The key aspect is mildly frequency-selective subband processing instead of a simple complex gain factor per subband. Relying on the use of fast Fourier transform, single-carrier frequency The application of frequency domain equalization techniques makes single carrier modulation a potentially valuable alternative to OFDM, especially in regard to its robustness to RF implementation impairments. This paper present an alternative promising approach to ISI mitigation by the use of single-carrier (SC) modulation combined with frequency-domain equalization (FDE). Recently, a frequency-domain turbo equalization (FDTE) sch Feher-patented quadrature phase shift keying (fqpsk) modulation is proposed for single-carrier frequency domain equalization (sc-fde). This article discusses an alternative approach based on more traditional single-carrier (SC) modulation methods. Fast Fourier transform and use Dec 1, 2006 · A novel structure, FDE-NP, which consists of a linear frequency domain equalizer (FDE) and a time domain noise predictor (NP) and it is shown that the proposed scheme has lower complexity and achieves better performance and complexity trade-off than the conventional FDE designs. this paper puts forward a new method modulation called cc-bcd-fqpsk. The signal is transmitted from the source to the destination using several sensors. In recent years, single-carrier system has again become an interesting and complementary alternative to multi-carrier system such as orthogonal Dec 1, 2007 · This paper investigates the use of complex-modulated oversampled filter banks (FBs) for frequency-domain equalization (FDE) in single-carrier systems. the fqpsk signal is oversampled to make that the discrete fourier transform (dft)/ inverse dft (idft) processing of it can be applied for sc Nov 24, 2010 · Jian Zhang, Yahong Rosa Zheng; Bandwidth-efficient frequency-domain equalization for single carrier multiple-input multiple-output underwater acoustic communications. Feb 1, 2017 · In order to reduce the inter-channel correlation arising from the activated symbol indices, a symbol mapping algorithm is proposed, which further improves the achievable error-rate performance of the SC-IM scheme. When the SC-FDE is used with Oct 18, 2010 · Abstract: Single-carrier code-division multiple access (SC-CDMA) with frequency-domain equalization (FDE) has attracted renewed interest in CDMA due to its lower peak-to-average power ratio (PAPR) and higher frequency diversity than orthogonal frequency-division multiple access (OFDMA), increased robustness to asynchronous multipath and multiuser interference than RAKE-based CDMA, and a Nov 21, 2023 · Channel equalization plays a crucial role in single-carrier underwater acoustic (UWA) communications. Motivated by the recent index modulation (IM) concept in the spatial, frequency, and space-time domains, we propose a novel broadband single-carrier (SC)-based IM (SC-IM) scheme as IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, VOL. com Royal Institute of Technology (KTH) Osquldasväg 10, 100 44 Stockholm, Sweden per. To equalize such long channels, conventional single-carrier time-domain equalization becomes infeasible due to high computational complexity. In both cases the fast Fourier transform (FFT) and its inverse are utilized. 3 Conventional nonlinear FDE scheme IDFT Decision DFT Yk F(l) k S˜(l) k s˜ (l) n B(l) k ˆs(l) n Sˆ(l−1) k Jan 1, 2013 · The application of frequency domain equalization technique makes single carrier modulation a valuable alternative resisting multiple-path and time-varying channel in the broadband RF communication. In this overview paper we survey recent results on single carrier systems with frequency domain equalization (SC-FDE), including comparisons and compatibilities with OFDM, and extensions via decision feedback equalization and overlap-save processing. Mar 13, 2019 · Equalization is accomplished in the frequency domain by performing a point-by-point multiplication of R k and the equalizer C k. However, its performance would degrade a lot if the channel is fast time-varying. Dec 6, 2012 · A frequency-domain turbo equalization (FDTE) scheme without cyclic prefix (CP) or zero padding is proposed for single-carrier, multiple-input-multiple-output un Aug 31, 2005 · In broadband wireless communications, multipath propagation often results in an overall channel with a long impulse response that could span tens or even hundreds of symbol intervals. An inverse-FFT is applied to the product to return to the sample domain. In this paper, we propose a novel structure, FDE-NP Oct 1, 2008 · In turn, the single carrier Frequency Domain Equalization (FDE) waveform [Pancaldi et al. The FDE receivers often operate in a block-by-block manner, assuming that the channel is time invariant during a block duration. Yahong Rosa Zheng, Member, IEEE, and Chengshan Xiao, Senior Member, IEEE, Abstract—Frequency-domain equalization (FDE) is an effec-tive technique for high data rate wireless communication systems suffering from very long intersymbol Aug 16, 2004 · The expected capability of the SC-FDE is always poorer than that of OFDM in frequency-selective fading channel, and it is closer to of orthogonal frequency-division multiplexing in channel with lower delay spread. This paper deals with the capacity behavior of single carrier modulation with frequency-domain equalization (SC-FDE) systems in broad-band multipath fading environments for the case Sep 1, 2016 · PDF | Single carrier frequency domain equalization (SC-FDE) is an alternative technology to orthogonal frequency division multiplexing to deal with the | Find, read and cite all the research Apr 5, 2022 · This paper proposes low complexity detection for internet of underwater things communication. However, the severe intersymbol interference is a big problem for the algorithm applying in shallow water. Abstract Recent research has indicated that single carrier frequency domain equalization (SC-FDE) is an attractive technology for underwater acoustic communications. Recently orthogonal frequency division multiplexing (OFDM) has been applied to DOW communications. 1 Introduction Since the 90’s, single carrier transmission with frequency domain equalization (SC-FDE) has been thoroughly studied and has been drawing much attention due to the effectiveness and simplicity of the transceiver[1]. Conventional linear SC-FDE mainly includes three modules: channel estimation, noise power estimation and channel equalization, where each module is optimized individually. Dec 8, 2009 · This paper proposes a bit-interleaved coded multilevel modulation for single-carrier frequency-domain equalization (SC-FDE). This paper does a research on the principle and characteristics of Nov 29, 2004 · Recent research has shown that single carrier frequency domain equalization (SC-FDE) is an attractive technology for broadband wireless communications because it does not have the problems of OFDM systems such as large peak-to-average ratio and the sensitivity to carrier frequency offsets. Conventional SC-FDE MIMO schemes are designed under the assumption of perfect channel estimation. In Nov 8, 2016 · Motivated by the recent index modulation (IM) concept in the spatial, frequency, and space-time domains, we propose a novel broadband single-carrier (SC)-based IM (SC-IM) scheme as well as its low-complexity frequency-domain equalization (FDE) algorithm. This assumption implies that traditional block-based FDE receivers experience performance degradation in Aug 3, 2020 · We propose and experimentally demonstrate an underwater wireless optical communication (UWOC) system using a 520-nm laser diode (LD) and 32-quadrature amplitude modulation (32-QAM) single carrier signals. 2, FEBRUARY 2009 815 Channel Estimation for Frequency-Domain Equalization of Single-Carrier Broadband Wireless Communications Yahong Rosa Zheng, Senior Member, IEEE, and Chengshan Xiao, Senior Member, IEEE Abstract—Frequency-domain equalization (FDE) is an effective technique for high-data-rate wireless communication systems suffering CONTRIBUTED P A P E R Single Carrier Modulation With Nonlinear Frequency Domain Equalization: An Idea Whose Time Has ComeVAgain In high-speed single-carrier digital communication systems, processing blocks of signals using Fast Fourier Transforms is an efficient way to equalize (compensate) for interference between transmitted symbols. The FD-DFE structure, which combines a frequency domain feedforward equalizer and a time domain feedback This paper presents a performance comparison between the single-carrier frequency-domain equalization (SCFDE) system and an experimental, linear minimum-mean-sq The single carrier frequency domain equalization (SC-FDE) technology adopts traditional single carrier modulation and uses orthogonal frequency division multiplexing (OFDM) for reference to equalize in frequency domain, which can effectively combat multipath fading of channels, but at the same time avoids the shortcomings of OFDM system, such Jul 14, 2020 · Frequency-domain equalization (FDE) is a computationally efficient method to recover underwater acoustic single-carrier transmissions in a multipath environment. A frequency-domain turbo equalization (FDTE) scheme without cyclic prefix (CP) or zero padding is proposed for single-carrier, multiple-input-multiple-output underwater acoustic communication. Osseiran}@ericsson. Dec 11, 2006 · Recent research has shown that single carrier frequency domain equalization (SC-FDE) is an attractive technology for broadband wireless communications for its advantages such as lower peak-to-average power ratio and reduced sensitivity to carrier frequency offset, when compared to orthogonal frequency-division multiplexing (OFDM) systems. The authors discuss the potential of OFDM signaling, with its limitations and inherent problems, as well as another potential technique that has so far been overlooked: single-carrier transmission with frequency- domain equalization, and introduces coded-OFDM (COFDM), which makes use of channel coding and frequency-domain interleaving. Single Carrier Frequency Domain Equalization on a Real-Time DSP-Based MIMO Test-Bed Andrew Logothetis, Afif Osseiran Per Zetterberg Ericsson Research SE-164 80 Stockholm, Sweden {Andrew. J. kth. To mitigate the inter-symbol interference (ISI), a frequency domain equalizer combined with a t … Dec 1, 2007 · PDF | This paper investigates the use of complex-modulated oversampled filter banks (FBs) for frequency-domain equalization (FDE) in single-carrier | Find, read and cite all the research you May 15, 2007 · Single-carrier frequency-domain equalization (SC-FDE) has recently been receiving much attention as an attractive method for broadband wireless communications for its advantages such as lower peak-to-average ratio and reduced sensitivity to carrier frequency offsets, when compared with orthogonal frequency-division multiplexing (OFDM) systems. Compared to time domain equalization, single carrier frequency domain equalizers (SC-FDEs) can effectively reduce the computational complexity by converting the received signals from time domain to frequency domain. This article surveys frequency domain equalization (FDE) applied to single-carrier (SC) modulation solutions. 16a standard, which led to the WiMAX wireless. Residual inter-symbol interference is suppressed by time domain equalization with small tap size. In the case of OFDM (orthogonal frequency division multiplexing), the inverse FFT transforms the complex amplitudes of the individual subcarriers at the transmitter into the time domain. Two alternative low-complexity linear equalizer structures with MSE criterion are considered for subband-wise equalization: a Jan 1, 2011 · The SC-FDE(single carrier-frequency domain equalizer) is a field that gathers more and more interest as a modulation scheme for the broadband wireless communications, for simple channel May 29, 2019 · Single-carrier frequency-domain equalization (SC-FDE) is a promising technique for coherent high-rate underwater acoustic (UWA) communications. In the first iteration of the FDTE, the received continuous data stream is divided into consecutive blocks … Prefiltered Single-Carrier Frequency-Domain Equalization for Binary CPM over Shallow Water Acoustic Channel Ruigang Han , 1, 2, 3 Ning Jia , 1, 2, 3, * Zhongyuan Guo , 1, 2, 3 Jianchun Huang , 1, 2, 3 Dong Xiao , 1, 2, 3 and Shengming Guo 1, 2, 3 Feb 1, 2010 · but versions of single carrier frequency domain equalization, as well as OFDM, have been considered for uplinks. The frequency-domain equalizer may be Jun 15, 2010 · In , single-carrier frequency-domain equalization (SC-FDE) followed by phase compensation is proposed for single-carrier systems, and the frequency-domain equalization for multiple-carrier orthogonal frequency division multiplexing (OFDM) systems has been proposed in [13, 14]. An alternative promising approach to ISI mitigation is the use of single-carrier (SC) modulation combined with fre-quency-domain equalization (FDE). Abstract—Single carrier frequency domain equalization (SC-FDE) is an alternative technology to orthogonal frequency division multiplexing to deal with the frequency selective channel Single-carrier frequency-domain turbo equalization without cyclic prefix or zero padding for underwater acoustic communications Longbao Wang Department of Electrical and Computer Engineering, Missouri University of Science and Technology, Rolla, Missouri 65409 Jun Tao Qualcomm Incorporated, Boulder, Colorado 80301 Yahong Rosa Zhenga) Department of Electrical and Computer Engineering, Missouri FFT BASED FREQUENCY-DOMAIN EQUALIZATION IN A SINGLE-CARRIER TRANSMISSION Throughout this paper, we consider single-carrier block transmission over a linear bandlimited channel with additive white Gaussian noise. With two transmit antennas, the scheme is shown to achieve significant diversity gains at low complexity over frequency-selective fading channels. At the Mar 1, 2011 · Recent research has shown that single carrier frequency domain equalization (SC-FDE) is an attractive technology for broadband wireless communications because it does not have the problems of OFDM May 31, 2012 · Simulation results showed that the H-DFE method achieved a much lower bit-error-rate performance than MMSE and ZF schemes, and the results in real underwater acoustic channels also proved this conclusion. , 2008] moves the IDFT computation from the transmitter to the receiver giving support for lower PAPR and Dec 22, 2009 · Single Carrier Modulation With Nonlinear Frequency Domain Equalization: An Idea Whose Time Has Come—Again Abstract: In recent years single carrier modulation (SCM) has again become an interesting and complementary alternative to multicarrier modulations such as orthogonal frequency division multiplexing (OFDM). The. Acou The aim of the paper is to compare multicarrier and single carrier modulation schemes for radio communication systems. In this paper, we analyzed the single-carrier fractional Fourier domain equalization (SC-FrFDE) system and applied it to the fast time-varying channel. SC radio modems with frequency domain equalization have similar performance, efficiency, and low signal processing complexity advantages as OFDM, and in addition are less sensitive than OFDM to RF impairments such as power amplifier We investigate the use of single carrier frequency domain equalization (SCFDE) over a diffuse optical wireless (DOW) communications. This paper proposes a frequency-domain turbo detection scheme for single-carrier, multiple-input, multiple output (MIMO) underwater acoustic (UWA) transmission without using cyclic prefix (CP), aiming to achieve a low detection complexity and a high transmission efficiency simultaneously. On the one hand, the com-plexity and performance of SC-FDE systems is comparable to Feb 12, 2020 · Jingwei Yin, Wei Ge, Xiao Han, Longxiang Guo; Frequency-domain equalization with interference rejection combining for single carrier multiple-input multiple-output underwater acoustic communications. Jan 1, 2020 · Frequency-domain equalization (FDE) is a technique to mitigate the intersymbol interference (ISI) associated with the channel effects of the transmission medium, where the equalization is done through frequency-domain processing. Similar to OFDM, the frequency Channel Estimation for Frequency-Domain Equalization of Single Carrier Broadband Wireless Communications. Turbo equalization is originally proposed in the time domain equalization (TDE) and then extended to transmission and single carrier modulation are adopted at the transmitter to combat the inter-symbol inter-ference resulted from the multipath delay. In single polarization transmission, 25-Gb/s COSC transmission with OFDE is demonstrated over 800 km to 4320 km of single Oct 1, 2011 · An overview of single-carrier frequency domain equalization (SC-FDE) and its Wireless applications is provided, and the brief history and system model of SC-F DE is reviewed, and several possible future research topics about SC- FDE are presented.
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