Journal ArticleDOI
Frequency domain equalization for single-carrier broadband wireless systems
Reads0
Chats0
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
More filters
Proceedings ArticleDOI
Tail Data Iteration in SC-FDE without CP System
TL;DR: In this paper, the influence on performance in SC-FDE (Single Carrier with Frequency Domain Equalization) without CP (cyclic prefix) system is presented, where the ICI (Inter Carrier Interference) is imposed since channel respond not appear circular.
Journal ArticleDOI
Performance comparison of single-carrier and multi-carrier waveforms over terahertz wireless channels
Proceedings ArticleDOI
Mismatched Detection of Turbo Block DFE Using Parallel Concatenated Scheme
Li Qiang,Shaoqian Li +1 more
TL;DR: A turbo-type scheme that uses parallel concatenation and turbo block decision feedback equalization (TBDFE) is proposed for transmission over linear intersymbol interference channels, which can offer significant improvement in performance.
Proceedings ArticleDOI
Frequency-domain pre-equalization transmit diversity for DS-CDMA mobile radio
TL;DR: This paper proposes frequency-domain pre-equalization transmit diversity (FPTD), which employs pre- equalization using multiple transmit antennas with transmit power constraint, in order to transform a frequency-selective channel seen at a base station receiver to a close-to-frequency-nonselective channel.
Proceedings ArticleDOI
A New Iterative Equalizer based on a Deterministic Annealing Process
TL;DR: In this article, a new iterative equalizer able to approach the Maximum Likelihood Sequence Estimation (MLSE) performance with manageable complexity is described. But this algorithm takes the general form of a continuation or deterministic annealing process, which has some similarities with the conventional block-iterative MMSE equalizer.
References
More filters
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.