Journal ArticleDOI
Frequency domain equalization for single-carrier broadband wireless systems
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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
Low-Complexity Iterative Frequency Domain Decision Feedback Equalization
TL;DR: Simulation results show that the performance of the proposed simplified DFE operating in the frequency domain of single-carrier systems is similar to the traditional iterative block DFE under various multipath fading channels, but it imposes a much lower complexity than the latter.
Posted Content
Spatial Characteristics of Distortion Radiated from Antenna Arrays with Transceiver Nonlinearities
TL;DR: In this article, the distortion from massive MIMO (MIMO) base stations with nonlinear amplifiers is analyzed both in-band and out-of-band.
Patent
Estimating frequency-offsets and multi-antenna channels in MIMO OFDM systems
Georgios B. Giannakis,Xiaoli Ma +1 more
TL;DR: In this article, a wireless transmitter forms blocks of symbols by inserting training symbols within two or more blocks of information-bearing symbols, and a modulator outputs a wireless signal in accordance with the blocks.
Proceedings ArticleDOI
Novel frequency-domain equalization architectures for a single-carrier wireless MIMO system
Xu Zhu,Ross D. Murch +1 more
TL;DR: It is shown that both the structures significantly outperform the conventional MIMO FDE, OFDM and time-domain DFE structures, especially at a higher RMS delay spread.
Journal ArticleDOI
Precoder Design for Multiuser MIMO ISI Channels Based on Iterative LMMSE Detection
TL;DR: An optimized precoding technique that takes into account iterative joint LMMSE detection and FEC decoding and achieves water-filling gain when channel state information at the transmitter is available and diversity gain when CSIT is not available.
References
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Analysis and Simulation of a Digital Mobile Channel Using Orthogonal Frequency Division Multiplexing
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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
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