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Proceedings ArticleDOI

A Hybrid Detection Algorithm for MIMO Systems

TLDR
The performance and the complexity are analyzed in MIMO system with different modulation scheme and the performance can be controlled through setting different values to the parameters in the algorithm to satisfy complexity and performance requirements.
Abstract
In this contribution, a hybrid detection algorithm based on QR decomposition for MIMO systems is proposed to reduce the complexity of the MIMO detection algorithm. The proposed algorithm combines vector searching with DF (Decision Feedback) technique to improve the reliability of the detected signals and meanwhile holds a low computational complexity. The computational complexity and BER performance can be controlled through setting different values to the parameters in the algorithm to satisfy complexity and performance requirements. In this paper, the performance and the complexity are analyzed in MIMO system with different modulation scheme.

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Citations
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Patent

Apparatus, method and computer program product providing soft decision generation with lattice reduction aided mimo detection

TL;DR: In this paper, a circuit that includes an input for coupling to a MTMO signal received from a channel to compute a change of basis matrix T and a reduced lattice basis matrix HT, to form a list L of points used for soft decision calculation using columns of the matrix HT and to perform MTMO detection for each point in the list L.
Journal ArticleDOI

Performance and Complexity Improvement of Training Based Channel Estimation in MIMO Systems

TL;DR: Experation results indicate that the proposed method not only alleviates the performance of MIMO channel estimation but also signiflcantly reduces the complexity caused by matrix inversion.
Patent

Method and device for detecting transmission signal with division detection

TL;DR: In this paper, a method and device for detecting a transmission signal on the basis of a received signal by applying a division and detection algorithm is presented, which is based on a sorted QR-decomposition algorithm with respect to a matrix indicating a channel state.
Patent

MIMO system method and device using sorted QR-decomposition (SQRD) for detecting transmission signal with division detection

TL;DR: In this article, a method and device for detecting a transmission signal on the basis of a received signal by applying a division and detection algorithm is presented, which is based on a sorted QR-decomposition algorithm with respect to a matrix indicating a channel state.
Journal ArticleDOI

Improvement of Complexity and Performance of Least Square Based Channel Estimation in MIMO System

TL;DR: Simulation results indicate that the proposed method not only alleviates the performance of MIMO channel estimation but also significantly reduces the complexity caused by matrix inversion.
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

A universal lattice code decoder for fading channels

TL;DR: By judicious choice of the decoding radius, it is shown that this maximum-likelihood decoding algorithm can be practically used to decode lattice codes of dimension up to 32 in a fading environment.
Journal ArticleDOI

Improved methods for calculating vectors of short length in a lattice, including a complexity analysis

TL;DR: In this paper, the authors show that searching through an ellipsoid is in many cases much more efficient than enumerating all vectors of Z'.. in a suitable box.
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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