scispace - formally typeset
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

Content maybe subject to copyright    Report

Citations
More filters
Patent

Systems and/or methods of increased privacy wireless communications

TL;DR: In this paper, a concatenated level of encryption/scrambling is proposed to increase the level of privacy and undetectability of transmitted signals in wireless communications, using pseudo-random generated signaling alphabets that are used by the mobile devices and by the system infrastructure to provide the communications.
Journal ArticleDOI

Performance enhancement of SC-FDMA systems using a companding technique

TL;DR: Simulation results show that the SC-FDMA with companding system has a lower PAPR when compared with the conventional SC- FDMA system, while the complexity of the system slightly increases.
Journal ArticleDOI

Full length article: About the diversity in cyclic prefixed single-carrier systems

TL;DR: It is proved that the block size has an influence on the performance at moderate SNR, and it is shown that the multipath diversity can be extracted by CPSC for the range of bit error rate values typically used in practice.
Journal ArticleDOI

Novel iterative equalization based on energy-spreading transform

TL;DR: Analytical and simulation results demonstrate that the novel iterative equalization for intersymbol interference channels is very close to the matched-filter bound (MFB) when the signal-to-noise ratio (SNR) is above a threshold.
Journal ArticleDOI

Single-Tap Equalization for Fast OFDM Signals Under Generic Linear Channels

TL;DR: This letter proposes a low-complexity fast OFDM scheme, which enables efficient single-tap equalization for generic linear channels without the symmetric limitation, and shows that this scheme exhibits better performance than the frequency-domain-equalization-based fast OfDM scheme under the wireless frequency-selective fading channel.
References
More filters
Book

Adaptive Filter Theory

Simon Haykin
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.