Journal ArticleDOI
Frequency domain equalization for single-carrier broadband wireless systems
TLDR
This article surveys frequency domain equalization (FDE) applied to single-carrier (SC) modulation solutions and discusses similarities and differences of SC and OFDM systems and coexistence possibilities, and presents examples of SC-FDE performance capabilities.Abstract:
Broadband wireless access systems deployed in residential and business environments are likely to face hostile radio propagation environments, with multipath delay spread extending over tens or hundreds of bit intervals. Orthogonal frequency-division multiplex (OFDM) is a recognized multicarrier solution to combat the effects of such multipath conditions. This article surveys frequency domain equalization (FDE) applied to single-carrier (SC) modulation solutions. 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 nonlinearities. We discuss similarities and differences of SC and OFDM systems and coexistence possibilities, and present examples of SC-FDE performance capabilities.read more
Citations
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Journal ArticleDOI
并行级联频域判决反馈（dfe）均衡策略及不匹配译码
TL;DR: Theater-goers are reminded of the dangers of underestimating the complexity of the DFE system.
Posted Content
Turbo EP-based Equalization: a Filter-Type Implementation
TL;DR: In this article, a filter-type equalizer was proposed to improve the solution of the linear minimum-mean squared error (LMMSE) turbo equalizer, with computational complexity constrained to be quadratic in the filter length.
The Effect of NCT Techniques on SC-FDMA System in presence of HPA
TL;DR: In this article, a nonlinear companding transform (NCT) technique is used to reduce the peak-to-average power ratio (PAPR) in single-carrier Frequency Division Multiple Access (SC-FDMA) systems.
Proceedings Article
Adaptive iterative layered space-frequency equalization for single-carreir MIMO systems
Xu Zhu,Ye Wu,Asoke K. Nandi +2 more
TL;DR: It is shown that AILSFE significantly outperforms the previously proposed LSFE with a modest increase of complexity, and can provide better performance than Iterative-block decision feedback equalizer (IB-DFE) at comparable complexity, with a relatively small number of iterations.
Patent
Transreceiving apparatus and method using space-frequency block-coded single-carrier frequency domain equalization
TL;DR: In this paper, a transceiving apparatus and method in which a space frequency block coding (SFBC) technique is applied to the SC-FDE technique is described, where a cyclic prefix (CP) is inserted into the output signal blocks and outputs the signal blocks through the same sub-channel by means of corresponding antenna.
References
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TL;DR: In this paper, the authors propose a recursive least square adaptive filter (RLF) based on the Kalman filter, which is used as the unifying base for RLS Filters.
Journal ArticleDOI
Analysis and Simulation of a Digital Mobile Channel Using Orthogonal Frequency Division Multiplexing
TL;DR: The analysis and simulation of a technique for combating the effects of multipath propagation and cochannel interference on a narrow-band digital mobile channel using the discrete Fourier transform to orthogonally frequency multiplex many narrow subchannels, each signaling at a very low rate, into one high-rate channel is discussed.
Journal ArticleDOI
BER sensitivity of OFDM systems to carrier frequency offset and Wiener phase noise
TL;DR: In this contribution the transmission of M-PSK and M-QAM modulated orthogonal frequency division multiplexed (OFDM) signals over an additive white Gaussian noise (AWGN) channel is considered and the degradation of the bit error rate is evaluated.
Journal ArticleDOI
Polyphase codes with good periodic correlation properties (Corresp.)
TL;DR: This correspondence describes the construction of complex codes of the form exp i \alpha_k whose discrete circular autocorrelations are zero for all nonzero lags.