New fast generalized sphere decoding algorithm in MIMO systems

Chao Liu; Zong Kai Yang; Jian Hua He

New fast generalized sphere decoding algorithm in MIMO systems

Chao Liu, Zong Kai Yang, Jian Hua He

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

Abstract

A new generalized sphere decoding algorithm is proposed for underdetermined MIMO systems with fewer receive antennas N than transmit antennas M. The proposed algorithm is significantly faster than the existing generalized sphere decoding algorithms. The basic idea is to partition the transmitted signal vector into two subvectors x_a and x_b with N - 1 and M - N + 1 elements respectively. After some simple transformations, an outer layer Sphere Decoder (SD) can be used to choose proper x_b and then use an inner layer SD to decide x_a, thus the whole transmitted signal vector is obtained. Simulation results show that Double Layer Sphere Decoding (DLSD) has far less complexity than the existing Generalized Sphere Decoding (GSDs).

Original language	English
Pages (from-to)	1114-1117
Number of pages	4
Journal	Dianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology
Volume	27
Issue number	7
Publication status	Published - 2005

Keywords

Double layer sphere decoding algorithm,
Generalized sphere decoding algorithm
MIMO
Wireless communications

ASJC Scopus subject areas

Electrical and Electronic Engineering

Cite this

@article{facec8faa4524a70905fdaf7fcaf393e,

title = "New fast generalized sphere decoding algorithm in MIMO systems",

abstract = "A new generalized sphere decoding algorithm is proposed for underdetermined MIMO systems with fewer receive antennas N than transmit antennas M. The proposed algorithm is significantly faster than the existing generalized sphere decoding algorithms. The basic idea is to partition the transmitted signal vector into two subvectors xa and xb with N - 1 and M - N + 1 elements respectively. After some simple transformations, an outer layer Sphere Decoder (SD) can be used to choose proper xb and then use an inner layer SD to decide xa, thus the whole transmitted signal vector is obtained. Simulation results show that Double Layer Sphere Decoding (DLSD) has far less complexity than the existing Generalized Sphere Decoding (GSDs).",

keywords = "Double layer sphere decoding algorithm,, Generalized sphere decoding algorithm, MIMO, Wireless communications",

author = "Chao Liu and Yang, {Zong Kai} and He, {Jian Hua}",

year = "2005",

language = "English",

volume = "27",

pages = "1114--1117",

journal = "Dianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology",

issn = "1009-5896",

publisher = "Science Press",

number = "7",

}

TY - JOUR

T1 - New fast generalized sphere decoding algorithm in MIMO systems

AU - Liu, Chao

AU - Yang, Zong Kai

AU - He, Jian Hua

PY - 2005

Y1 - 2005

N2 - A new generalized sphere decoding algorithm is proposed for underdetermined MIMO systems with fewer receive antennas N than transmit antennas M. The proposed algorithm is significantly faster than the existing generalized sphere decoding algorithms. The basic idea is to partition the transmitted signal vector into two subvectors xa and xb with N - 1 and M - N + 1 elements respectively. After some simple transformations, an outer layer Sphere Decoder (SD) can be used to choose proper xb and then use an inner layer SD to decide xa, thus the whole transmitted signal vector is obtained. Simulation results show that Double Layer Sphere Decoding (DLSD) has far less complexity than the existing Generalized Sphere Decoding (GSDs).

AB - A new generalized sphere decoding algorithm is proposed for underdetermined MIMO systems with fewer receive antennas N than transmit antennas M. The proposed algorithm is significantly faster than the existing generalized sphere decoding algorithms. The basic idea is to partition the transmitted signal vector into two subvectors xa and xb with N - 1 and M - N + 1 elements respectively. After some simple transformations, an outer layer Sphere Decoder (SD) can be used to choose proper xb and then use an inner layer SD to decide xa, thus the whole transmitted signal vector is obtained. Simulation results show that Double Layer Sphere Decoding (DLSD) has far less complexity than the existing Generalized Sphere Decoding (GSDs).

KW - Double layer sphere decoding algorithm,

KW - Generalized sphere decoding algorithm

KW - MIMO

KW - Wireless communications

UR - http://www.scopus.com/inward/record.url?scp=23044516211&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:23044516211

SN - 1009-5896

VL - 27

SP - 1114

EP - 1117

JO - Dianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology

JF - Dianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology

IS - 7

ER -

New fast generalized sphere decoding algorithm in MIMO systems

Abstract

Keywords

ASJC Scopus subject areas

Other files and links

Fingerprint

Cite this