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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Decision Feedback Equalizer with Frequency Domain Bidirectional Noise Prediction for MIMO-SCFDE System
Proceedings ArticleDOI
Effect of noise suppression in channel estimation for single-carrier FDMA radio access with variable transmission bandwidth
TL;DR: It is confirmed that frequency domain channel estimation using only the threshold based path selection improves the BLER performance the most in a wide transmission bandwidth such as 25 RBs where sufficient path resolution accuracy is obtained.
Journal Article
Joint Transmit/Receive MMSE Filtering for Single-carrier MIMO Spatial Multiplexing
TL;DR: A joint transmit/receive frequency-domain filtering using the channel state information (CSI) at both the transmitter and receiver for SC-MIMO spatial multiplexing and it is shown that the proposed method outperforms the conventional receive MMSE-FD filtering which uses the CSI at the receiver only.
Journal ArticleDOI
An adaptive antenna array for single carrier modulation with cyclic prefix
TL;DR: In this article, a weight control method was proposed for a cyclic prefix in single carrier wireless communications (SC-CP) system, where the delayed wave within the guard interval (GI) can be equalized by discrete frequency domain equalization.
Journal ArticleDOI
Iterative Interference Cancellation and Channel Estimation for Mobile SC-FDE Systems
TL;DR: The soft decision based iterative block decision feedback equalization (SD-IBDFE) with parallel interference cancellation (PIC) and a least squares (LS) adaptation algorithm give significant improvement in estimating the SDMA users' channels in an iterative manner.
References
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Book
Adaptive Filter Theory
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.