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
More filters
Low-complexity equalization of time-varying channels in a single-carrier system
Zijian Tang,Geert Leus +1 more
TL;DR: An extended data model is proposed, which incorporates a receiver window to enforce a low-complexity frequency-domain equalizer and the channel matrix be approximately banded and the inter-block interference be reduced.
Dissertation
Adaptive OFDM Cooperative Systems
TL;DR: This study shows that the proposed algorithms result in exploiting the multi-path diversity and achieving extra coding gain and an adaptive power loading algorithm to minimize the bit error rate under total power constraint based on two relay selection strategies.
Proceedings ArticleDOI
Overlap FDE with Signal Extraction Based on SIR Considering Time/Frequency Selectivity of Fading Channels
TL;DR: By computer simulation, it is shown that the proposed AOFDE which uses the SIR function to take into account both the time and frequency selectivity fading of the channels (TFS-AOFDE) can provide better transmission performance than the conventional scheme.
Proceedings ArticleDOI
Performance comparison between single-carrier and OFDM using the cutoff rate
TL;DR: In this article, a performance comparison between the single carrier with cyclic prefix (SCCP) and the orthogonal frequency division multiplexing (OFDM) systems in terms of the cutoff rate is presented.
Quadrature OFDMA Systems Based on
Lin Luo,Zhenning Shi +1 more
TL;DR: In this paper, the authors proposed a novel Quadrature OFDMA (Q-OFDMA) system which can overcome the three major problems of OFDM, including high peak to average power ratio (PAPR), sensitivity to carrier frequency offset (CFO), and high complexity in users terminals.
References
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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.