Proceedings ArticleDOI
A Novel Detection Algorithm Using the Sorted QR Decomposition Based on Log-Likelihood Ratio in V-BLAST Systems
TLDR
A novel detection algorithm using log-likelihood ratio (LLR) to detect signals in V-BLAST systems using the sorted QR decomposition of the channel matrix, and applies LLR to determine the order of detection.Abstract:
In this paper, we propose a novel detection algorithm using log-likelihood ratio (LLR) to detect signals in V-BLAST systems. This algorithm utilizes the sorted QR decomposition (SQRD) of the channel matrix, and applies LLR to determine the order of detection. Simulation results show that the proposed algorithm provides a better performance than the conventional SQRD with a few additional computations. Approximately, the average BER performance of our algorithm is better than that of the conventional SQRD algorithm by 6 dB for BPSK and by 2 dB for QPSK respectively at 10-3 target BERread more
Citations
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Journal ArticleDOI
A low-complexity hybrid algorithm based on particle swarm and ant colony optimization for large-MIMO detection
Manish Mandloi,Vimal Bhatia +1 more
TL;DR: Simulation results show that the proposed algorithm outperforms the popular minimum mean squared error (MMSE) algorithm and the existing ACO algorithms in terms of BER performance while achieve a near ML performance which makes the algorithm suitable for reliable detection in large-MIMO systems.
Journal ArticleDOI
Congestion control based ant colony optimization algorithm for large MIMO detection
Manish Mandloi,Vimal Bhatia +1 more
TL;DR: A congestion control based ant colony optimization (CC-ACO) algorithm for large MIMO detection is proposed and the robustness of the proposed algorithm under channel state information (CSI) estimation error is discussed.
Journal ArticleDOI
Performance analysis of cooperative virtual MIMO systems for wireless sensor networks.
TL;DR: The results show that cooperative Virtual-MIMO with Binary Phase Shift Keying-Wavelet based Orthogonal Frequency Division Multiplexing (BPSK-WOFDM) modulation is a promising solution for future high data-rate and energy-efficient WSNs.
2005 International Conference on Wireless Communications, Networking and Mobile Computing
J. N. Liu,R. Conners +1 more
Proceedings ArticleDOI
A 2×2–8×8 sorted QR decomposition processor for MIMO detection
TL;DR: The proposed Givens-Rotation-based QR decomposition algorithm features efficient parallel processing with sorting function that resolves the trade-off between the detection performance and hardware utiliztion efficiency.
References
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Journal ArticleDOI
Layered space-time architecture for wireless communication in a fading environment when using multi-element antennas
TL;DR: This paper addresses digital communication in a Rayleigh fading environment when the channel characteristic is unknown at the transmitter but is known (tracked) at the receiver with the aim of leveraging the already highly developed 1-D codec technology.
Proceedings ArticleDOI
V-BLAST: an architecture for realizing very high data rates over the rich-scattering wireless channel
TL;DR: This paper describes a wireless communication architecture known as vertical BLAST (Bell Laboratories Layered Space-Time) or V-BLAST, which has been implemented in real-time in the laboratory and demonstrated spectral efficiencies of 20-40 bps/Hz in an indoor propagation environment at realistic SNRs and error rates.
Journal ArticleDOI
Simplified processing for high spectral efficiency wireless communication employing multi-element arrays
TL;DR: It is shown that robust wireless communication in high-scattering propagation environments using multi-element antenna arrays (MEAs) at both transmit and receive sites using a simplified, but highly spectrally efficient space-time communication processing method can offer no more than about 40% more capacity than the simple architecture presented.
Journal ArticleDOI
Efficient algorithm for decoding layered space-time codes
TL;DR: A new efficient decoding algorithm based on QR decomposition is presented, which requires only a fraction of the computational effort compared with the standard decoding algorithm requiring the multiple calculation of the pseudo inverse of the channel matrix.
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