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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Proceedings ArticleDOI
Analysis of phase noise in vector OFDM systems
TL;DR: It is shown that phase noise in V-OFDM systems leads to a Common Vector Block Phase Error (CVBPE) as well as an Inter Vector Block Carrier Interference (IVBCI) effect, both of which are detrimental to the performance of a V- OFDM system.
Proceedings ArticleDOI
Noise Predictive Turbo Equalization for a Filter Bank Based Receiver in a SC Transmission System
TL;DR: A turbo equalization approach, which includes the recently proposed filter bank based frequency-domain equalizer, and a noise predictor inside of a decision-feedback loop, in coded single-carrier transmission is studied.
Patent
Apparatus and methods for adaptive data rate communication in a forward-scatter radio system
TL;DR: In this paper, a transmitter/receiver apparatus and method provide adaptive data rate fading compensation that utilize dual-polarization transmissions at a constant modulation-symbol rate over a forward-scatter radio link and that employ adaptive receiver techniques that operate efficiently at the noisy uncoded signal-to-noise ratio threshold of present-day forward-error correction codes over the range of multipath widths in such forwardscatter environments.
Proceedings ArticleDOI
Complexity-Reduced Per-Antenna Multiple Access Interference Cancellation for DAN Using DS-CDMA
TL;DR: A complexity-reduced per-antenna MAI cancellation before diversity combining is proposed, which is suitable for DAN using DS-CDMA and achieves almost the same uplink capacity as fullMAI cancellation after diversity combining.
Low complexity multi carrier multiple access with cyclic delay diversity
TL;DR: It is shown that even for high data rates DFT precoded OFDMA with interleaved subcarrier allocation is shown to outperform the scheme with block allocation.
References
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Journal ArticleDOI
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
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Journal ArticleDOI
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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.