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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Proceedings ArticleDOI
ASIP Architecture for Multi-Standard Wireless Terminals
TL;DR: The block processing engine (BPE) is presented, an application specific instruction-set processor (ASIP) explicitly designed for the implementation of multi-standard wireless terminals that fully satisfies stringent real-time constraints imposed by emerging technologies.
2-dimensional OVSF Spreading for Chip-interleaved DS-CDMA Uplink Transmission
Le Liu,Fumiyuki Adachi +1 more
TL;DR: 2-dimensional (2D)-OVSF spreading for chip-interleaved DS-CDMA uplink transmission is proposed, and single-user frequency-domain MMSE equalization can be used to take advantage of frequency-selective fading channel for signal detection.
Proceedings ArticleDOI
On the effect of channel estimation errors in SC-FDE systems using widely linear iterative equalization
TL;DR: It was found out that when compared to their strictly linear versions their error performance is more robust with respect to these errors, and even when this error is considered their performance is slightly better.
Book ChapterDOI
Block Transmission with Frequency Domain Equalization for VLC
TL;DR: The theoretical background of FDE under the intensity modulation constraint is discussed and its performance with the performance of bit-loading enhanced DC-biased DMT in multipath indoor channels is compared.
Journal ArticleDOI
Space-Time Block Coding for Uplink Single-Carrier CDMA with Joint Detection in the Frequency Domain
TL;DR: A new air interface that combines SC-CDMA with space-time block coding (STBC) across multiple transmit antennas in order to make the link more robust and benefit from the spatial diversity at high user loads is proposed.
References
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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.