A new approach for fast generalized sphere decoding in MIMO Systems

Zong Kai Yang; Chao Liu; Jianhua He

doi:10.1109/LSP.2004.840142

A new approach for fast generalized sphere decoding in MIMO Systems

Zong Kai Yang
, Chao Liu
, Jianhua He

Research output: Contribution to journal › Article › peer-review

47 Citations (Scopus)

Abstract

A new generalized sphere decoder (GSD), called a double-layer sphere decoder (DLSD), is proposed for under-determined MIMO systems with fewer receive antennas N than transmit antennas M. The proposed algorithm is significantly faster than those introduced in [1] and [2]. The basic idea is to partition the transmitted signal vector into two subvectors with M - N + 1 and N - 1 elements. After some simple transformations, we can use an outer layer sphere decoder (SD) to choose proper subvectors of length M - N + 1 and then use an inner layer SD to decide the other subvector of length N - 1, thus the whole transmitted signal vector is obtained. Simulation results show that DLSD has far less complexity than the existing GSDs.

Original language	English
Pages (from-to)	41-44
Number of pages	4
Journal	IEEE Signal Processing Letters
Volume	12
Issue number	1
DOIs	https://doi.org/10.1109/LSP.2004.840142
Publication status	Published - 20 Dec 2004

Keywords

Double-layer sphere decoder
Generalized sphere decoder
MIMO
Wireless communication

ASJC Scopus subject areas

Signal Processing
Electrical and Electronic Engineering
Applied Mathematics

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10.1109/LSP.2004.840142

Cite this

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title = "A new approach for fast generalized sphere decoding in MIMO Systems",

abstract = "A new generalized sphere decoder (GSD), called a double-layer sphere decoder (DLSD), is proposed for under-determined MIMO systems with fewer receive antennas N than transmit antennas M. The proposed algorithm is significantly faster than those introduced in [1] and [2]. The basic idea is to partition the transmitted signal vector into two subvectors with M - N + 1 and N - 1 elements. After some simple transformations, we can use an outer layer sphere decoder (SD) to choose proper subvectors of length M - N + 1 and then use an inner layer SD to decide the other subvector of length N - 1, thus the whole transmitted signal vector is obtained. Simulation results show that DLSD has far less complexity than the existing GSDs.",

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year = "2004",

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T1 - A new approach for fast generalized sphere decoding in MIMO Systems

AU - Yang, Zong Kai

AU - Liu, Chao

AU - He, Jianhua

PY - 2004/12/20

Y1 - 2004/12/20

N2 - A new generalized sphere decoder (GSD), called a double-layer sphere decoder (DLSD), is proposed for under-determined MIMO systems with fewer receive antennas N than transmit antennas M. The proposed algorithm is significantly faster than those introduced in [1] and [2]. The basic idea is to partition the transmitted signal vector into two subvectors with M - N + 1 and N - 1 elements. After some simple transformations, we can use an outer layer sphere decoder (SD) to choose proper subvectors of length M - N + 1 and then use an inner layer SD to decide the other subvector of length N - 1, thus the whole transmitted signal vector is obtained. Simulation results show that DLSD has far less complexity than the existing GSDs.

AB - A new generalized sphere decoder (GSD), called a double-layer sphere decoder (DLSD), is proposed for under-determined MIMO systems with fewer receive antennas N than transmit antennas M. The proposed algorithm is significantly faster than those introduced in [1] and [2]. The basic idea is to partition the transmitted signal vector into two subvectors with M - N + 1 and N - 1 elements. After some simple transformations, we can use an outer layer sphere decoder (SD) to choose proper subvectors of length M - N + 1 and then use an inner layer SD to decide the other subvector of length N - 1, thus the whole transmitted signal vector is obtained. Simulation results show that DLSD has far less complexity than the existing GSDs.

KW - Double-layer sphere decoder

KW - Generalized sphere decoder

KW - MIMO

KW - Wireless communication

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DO - 10.1109/LSP.2004.840142

M3 - Article

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SP - 41

EP - 44

JO - IEEE Signal Processing Letters

JF - IEEE Signal Processing Letters

IS - 1

ER -

A new approach for fast generalized sphere decoding in MIMO Systems

Abstract

Keywords

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