Advanced Equalization Techniques for Wireless Communications
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Citation: EURASIP Journal on Advances in Signal Processing 2011 2010:623540
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Bidirectional MIMO Channel Tracking Based on PASTd and Performance Evaluation
We consider a bidirectional time division duplex (TDD) multiple-input multiple-output (MIMO) communication system with time-varying channel and additive white Gaussian noise (AWGN). A blind bidirectional chann...
Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:478234 -
Adaptive Channel-Tracking Method and Equalization for MC-CDMA Systems over Rapidly Fading Channel under Colored Noise
A recursive maximum-likelihood (RML) algorithm for channel estimation under rapidly fading channel and colored noise in a multicarrier code-division multiple-access (MC-CDMA) system is proposed in this paper. ...
Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:871650 -
Approximate Minimum Bit Error Rate Equalization for Fading Channels
A novel channel equalizer algorithm is introduced for wireless communication systems to combat channel distortions resulting from multipath propagation. The novel algorithm is based on minimizing the bit error...
Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:615623 -
Constellation Design for Widely Linear Transceivers
Constellation design has been previously addressed by assuming that there is a linear equalizer at the receiver side. However, the widely linear equalizer is well known to outperform the linear one with no sig...
Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:176587 -
Low Complexity MLSE Equalization in Highly Dispersive Rayleigh Fading Channels
A soft output low complexity maximum likelihood sequence estimation (MLSE) equalizer is proposed to equalize M-QAM signals in systems with extremely long memory. The computational complexity of the proposed eq...
Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:874874 -
A Gaussian Mixture Approach to Blind Equalization of Block-Oriented Wireless Communications
We consider blind equalization for block transmissions over the frequency selective Rayleigh fading channel. In the absence of pilot symbols, the receiver must be able to perform joint equalization and blind c...
Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:340417 -
Maximum-LikelihoodSemiblind Equalization of Doubly Selective Channels Using the EM Algorithm
Maximum-likelihood semi-blind joint channel estimation and equalization for doubly selective channels and single-carrier systems is proposed. We model the doubly selective channel as an FIR filter where each f...
Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:709143 -
Iterative Frequency-Domain Channel Estimation and Equalization for Ultra-Wideband Systems with Short Cyclic Prefix
In impulse radio ultra-wideband (IR-UWB) systems where the channel lengths are on the order of a few hundred taps, conventional use of frequency-domain (FD) processing for channel estimation and equalization m...
Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:819591 -
Fast Multi-Symbol Based Iterative Detectors for UWB Communications
Ultra-wideband (UWB) impulse radios have shown great potential in wireless local area networks for localization, coexistence with other services, and low probability of interception and detection. However, low...
Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:903161 -
Channel Equalization for Single Carrier MIMO Underwater Acoustic Communications
Multiple-input multiple-output (MIMO) underwater acoustic (UWA) channels introduce both space-time interference (STI) and time-varying phase distortion for transmitted signals. In such cases, the equalized sym...
Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:281769 -
Time-Varying FIR Equalization for MIMO Transmission over Doubly Selective Channels
We propose time-varying FIR equalization techniques for spatial multiplexing-based multiple-input multiple-output (MIMO) transmission over doubly selective channels. The doubly selective channel is approximate...
Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:704350 -
Sparsity-Aware Estimation of CDMA System Parameters
The number of active users, their timing offsets, and their (possibly dispersive) channels with the access point are performance-critical parameters for wireless code division multiple access (CDMA). Estimatin...
Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:417981 -
Block Transmissions over Doubly Selective Channels: Iterative Channel Estimation and Turbo Equalization
Modern wireless communication systems require high transmission rates, giving rise to frequency selectivity due to multipath propagation. In addition, high-mobility terminals and scatterers induce Doppler shif...
Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:974652 -
Iterative Sparse Channel Estimation and Decoding for Underwater MIMO-OFDM
We propose a block-by-block iterative receiver for underwater MIMO-OFDM that couples channel estimation with multiple-input multiple-output (MIMO) detection and low-density parity-check (LDPC) channel decoding...
Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:460379 -
Diversity-Enabled and Power-Efficient Transceiver Designs for Peak-Power-Limited SIMO-OFDM Systems
Orthogonal frequency division multiplexing (OFDM) has been widely adopted for high data rate wireless transmissions. By deploying multiple receiving antennas, single-input multiple-output- (SIMO-) OFDM can fur...
Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:535943