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
A multi-antenna technique for mm-wave communications with large constellations and strongly nonlinear amplifiers
TL;DR: This paper proposes a multi-antenna transmitter combined with a frequency-domain receiver for broadband mm-wave systems based on large and dense constellations, compatible with highly-efficient, low-cost, strongly nonlinear amplifiers, while allowing spacial multiplexing gains.
Journal ArticleDOI
MIMO Block Spread CDMA Systems for Broadband Wireless Communications
TL;DR: It is shown that under low mobility conditions, the proposed systems are virtually free from Multiple User Interference (MUI) and the block processing technique used leads to considerable reduction in the overall processing complexity.
Book ChapterDOI
Extremely Higher-Order Modulation Formats
TL;DR: In this article, the authors provide an overview of fundamental technologies and recent challenges on extremely higher-order quadrature amplitude modulation (QAM) such as 256-1024 levels, toward the realization of an ultrahigh spectral efficiency approaching the Shannon limit.
Proceedings ArticleDOI
Low-complexity turbo equalization for single-carrier systems without cyclic prefix
TL;DR: A low complexity frequency-domain turbo equalization algorithm for single-carrier system without cyclic prefix that can be implemented in the frequency domain with fast Fourier transform (FFT), and it does not involve matrix inversion.
Journal ArticleDOI
Efficient Resource Allocation in Cognitive Networks
Abdullah Yaqot,Peter Adam Hoeher +1 more
TL;DR: This paper proposes a computationally and spectrally efficient resource allocation scheme for multiuser MIMO orthogonal-frequency-division-multiplexing-based underlay CR networks to provide good spectral efficiency gain and, therefore, increased communication range.
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.