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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Journal ArticleDOI
Studies on an Iterative Frequency Domain Channel Estimation Technique for MIMO-UWB Communications
TL;DR: This paper assumes the use of a MIMO-UWB system that employs a UWB-IR scheme with the FDE technique as the wideband wireless transmission scheme for heavy multipath environments, and evaluates the iterative frequency domain channel estimation through computer simulations and computational complexity calculations.
Journal ArticleDOI
A Detection Algorithm Combined Frequency Domain Equalization with Partial Parallel Interference Cancellation Based on Energy-Ordering: A Detection Algorithm Combined Frequency Domain Equalization with Partial Parallel Interference Cancellation Based on Energy-Ordering
Lei Cao,Xin Zhang,Dacheng Yang +2 more
Proceedings ArticleDOI
A simple frequency-domain equalizer over doubly-selective channel without feedback
TL;DR: The proposed method reduces the complexity of algorithm by preserving partial of the frequency equalization result instead of tentative equalizing and decoding, and can also effectively decrease the intersymbol interference in fast fading environment.
Journal ArticleDOI
Single-Carrier Transmission Using Overlap Frequency Domain Equalizing and Coherent Averaging
TL;DR: A single-carrier transmission method based on an overlap frequency-domain equalizing (FDE) and a coherent averaging and shows the effect of the proposed technique over the multipath channels.
Ds-cdma frequency-domain equalization with rls-based channel estimation
TL;DR: The BER performance using one-tap RLS-based channel estimation in a frequencyselective Rayleigh fading channel is compared with that using 2-step MLCE and pilot-assisted channel estimation with linear interpolation by computer simulation.
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.