A Method to Compute All Fixed Points for the Iterative MUD of CDMA Systems with Chip-Level Interleavers

Mark S.K. Lau; Wuyi Yue; Li Ping; Duan Li

doi:10.1109/TENCON.2006.344203

A Method to Compute All Fixed Points for the Iterative MUD of CDMA Systems with Chip-Level Interleavers

Mark S.K. Lau
, Wuyi Yue
, Li Ping
, Duan Li

Department of Mathematics

Research output: Chapter in book/report/conference proceeding › Conference proceeding › peer-review

2 Citations (Scopus)

Abstract

This paper proposes a simple method to compute all fixed points for the iterative MUD of CDMA systems with chip-level interleavers. The task of finding all fixed points is difficult because a set of nonlinear equations with multiple variables has to be solved. It is shown that this set of equations can be reduced to an equivalent equation with just one variable. As a result, all fixed points can be obtained by simply locating the roots of this univariate equation. An application of the proposed method in optimal power allocation with a numerical example is presented as well.

Original language	English
Title of host publication	2006 IEEE Region 10 Conference, TENCON 2006
Publisher	IEEE
Pages	1-4
Number of pages	4
ISBN (Electronic)	1424405491
ISBN (Print)	1424405483
DOIs	https://doi.org/10.1109/TENCON.2006.344203
Publication status	Published - 14 Nov 2006
Event	2006 IEEE Region 10 Conference, TENCON 2006 - Hong Kong, China Duration: 14 Nov 2006 → 17 Nov 2006 https://ieeexplore.ieee.org/xpl/conhome/4142120/proceeding (Conference Proceedings)

Publication series

Name	IEEE Region 10 Conference, TENCON
ISSN (Print)	2159-3442
ISSN (Electronic)	2159-3450

Conference

Conference	2006 IEEE Region 10 Conference, TENCON 2006
Country/Territory	China
City	Hong Kong
Period	14/11/06 → 17/11/06
Internet address	https://ieeexplore.ieee.org/xpl/conhome/4142120/proceeding (Conference Proceedings)

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10.1109/TENCON.2006.344203

Cite this

@inproceedings{d42c10d55e984905920dc84a542aa145,

title = "A Method to Compute All Fixed Points for the Iterative MUD of CDMA Systems with Chip-Level Interleavers",

abstract = "This paper proposes a simple method to compute all fixed points for the iterative MUD of CDMA systems with chip-level interleavers. The task of finding all fixed points is difficult because a set of nonlinear equations with multiple variables has to be solved. It is shown that this set of equations can be reduced to an equivalent equation with just one variable. As a result, all fixed points can be obtained by simply locating the roots of this univariate equation. An application of the proposed method in optimal power allocation with a numerical example is presented as well.",

author = "Lau, \{Mark S.K.\} and Wuyi Yue and Li Ping and Duan Li",

note = "Publisher Copyright: {\textcopyright} 2006 IEEE. Funding Information: This work was supported in part by MEXT.ORC (2004-2008), Japan.; 2006 IEEE Region 10 Conference, TENCON 2006 ; Conference date: 14-11-2006 Through 17-11-2006",

year = "2006",

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doi = "10.1109/TENCON.2006.344203",

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AU - Lau, Mark S.K.

AU - Yue, Wuyi

AU - Ping, Li

AU - Li, Duan

PY - 2006/11/14

Y1 - 2006/11/14

N2 - This paper proposes a simple method to compute all fixed points for the iterative MUD of CDMA systems with chip-level interleavers. The task of finding all fixed points is difficult because a set of nonlinear equations with multiple variables has to be solved. It is shown that this set of equations can be reduced to an equivalent equation with just one variable. As a result, all fixed points can be obtained by simply locating the roots of this univariate equation. An application of the proposed method in optimal power allocation with a numerical example is presented as well.

AB - This paper proposes a simple method to compute all fixed points for the iterative MUD of CDMA systems with chip-level interleavers. The task of finding all fixed points is difficult because a set of nonlinear equations with multiple variables has to be solved. It is shown that this set of equations can be reduced to an equivalent equation with just one variable. As a result, all fixed points can be obtained by simply locating the roots of this univariate equation. An application of the proposed method in optimal power allocation with a numerical example is presented as well.

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DO - 10.1109/TENCON.2006.344203

M3 - Conference proceeding

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BT - 2006 IEEE Region 10 Conference, TENCON 2006

PB - IEEE

T2 - 2006 IEEE Region 10 Conference, TENCON 2006

Y2 - 14 November 2006 through 17 November 2006

ER -

A Method to Compute All Fixed Points for the Iterative MUD of CDMA Systems with Chip-Level Interleavers

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