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
More filters
Journal ArticleDOI
Blind-Channel Estimation and Interference Suppression for Single-Carrier and Multicarrier Block Transmission Systems
K. Amleh,Hongbin Li +1 more
TL;DR: This paper presents a unified approach to blind-channel estimation and interference suppression for block transmission using ZP or CP in both single-carrier (SC) and multicarrier (MC) systems, using a generalized multichannel minimum variance principle to design an equalizing filterbank.
Iterative Channel Estimation in LTE Uplink
TL;DR: The algorithm has been tested on several channel models and has been shown to provide a gain of about 0:5 dB with two estimation stages, compared to the no-feedback case.
Proceedings ArticleDOI
Performance of SC-FDMA for LTE Uplink Under Different Modulation Schemes
TL;DR: In this paper, the performance of single-carrier frequency division multiple access (SC-FDMA) for LTE uplink is compared on the basis of symbol error rate (SER) using different types of modulation schemes, like, binary phase shift keying (BPSK), QPSK, 16QAM and 64QAM.
Proceedings ArticleDOI
Frequency domain multiuser detectors for ultra-wideband short-range communications
Simone Morosi,Tiziano Bianchi +1 more
TL;DR: An original multiuser detector for high rate short-range impulse radio ultra-wideband systems and shows that the MMSE receiver achieves the best performance, irrespective of the number of active terminals.
Proceedings ArticleDOI
Combining info and spatial directivities in multiple antenna transmission systems
TL;DR: In this article, a double-layer multilevel MIMO system is proposed, where each amplification branch is connected to an antenna array to achieve both constellation and power directivities, assuring at same time similar performances to systems using transmitters with 2-dimensional antenna arrays.
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.