A reverselink beamforming based on simplex downhill algorithm for time-varying channel environments

Joonsung Lee; Changheon Oh; Chungyong Lee

A reverselink beamforming based on simplex downhill algorithm for time-varying channel environments

Joonsung Lee, Changheon Oh, Chungyong Lee

Department of Electrical and Electronic Engineering

Research output: Contribution to journal › Conference article › peer-review

Abstract

New beamforming method based on simplex downhill optimaization process has been presented for the reverse link CDMA systems. The proposed system performs code-filtering at each antenna for each user. It is shown that for fast fading channels, conventional sqare error based cost functions can yield poor results. A new method is proposed based on a variation of the SINK cost function coupled with optimal time variying channel estimation to improve signal tracking. The new beamforming method gives lower computations and faster convergence properties than existing algorithms in fast filing enviromnment. The simulation results show that the proposed algorithm has a better BER performance in the case of the time-varing channel.

Original language	English
Pages (from-to)	232-235
Number of pages	4
Journal	IEEE Vehicular Technology Conference
Volume	58
Issue number	1
Publication status	Published - 2003
Event	2003 IEEE 58th Vehicular Technology Conference, VTC2003-Fall - Orlando, FL, United States Duration: 2003 Oct 6 → 2003 Oct 9

All Science Journal Classification (ASJC) codes

Computer Science Applications
Electrical and Electronic Engineering
Applied Mathematics

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title = "A reverselink beamforming based on simplex downhill algorithm for time-varying channel environments",

abstract = "New beamforming method based on simplex downhill optimaization process has been presented for the reverse link CDMA systems. The proposed system performs code-filtering at each antenna for each user. It is shown that for fast fading channels, conventional sqare error based cost functions can yield poor results. A new method is proposed based on a variation of the SINK cost function coupled with optimal time variying channel estimation to improve signal tracking. The new beamforming method gives lower computations and faster convergence properties than existing algorithms in fast filing enviromnment. The simulation results show that the proposed algorithm has a better BER performance in the case of the time-varing channel.",

author = "Joonsung Lee and Changheon Oh and Chungyong Lee",

year = "2003",

language = "English",

volume = "58",

pages = "232--235",

journal = "IEEE Vehicular Technology Conference",

issn = "0740-0551",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "1",

note = "2003 IEEE 58th Vehicular Technology Conference, VTC2003-Fall ; Conference date: 06-10-2003 Through 09-10-2003",

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TY - JOUR

T1 - A reverselink beamforming based on simplex downhill algorithm for time-varying channel environments

AU - Lee, Joonsung

AU - Oh, Changheon

AU - Lee, Chungyong

PY - 2003

Y1 - 2003

N2 - New beamforming method based on simplex downhill optimaization process has been presented for the reverse link CDMA systems. The proposed system performs code-filtering at each antenna for each user. It is shown that for fast fading channels, conventional sqare error based cost functions can yield poor results. A new method is proposed based on a variation of the SINK cost function coupled with optimal time variying channel estimation to improve signal tracking. The new beamforming method gives lower computations and faster convergence properties than existing algorithms in fast filing enviromnment. The simulation results show that the proposed algorithm has a better BER performance in the case of the time-varing channel.

AB - New beamforming method based on simplex downhill optimaization process has been presented for the reverse link CDMA systems. The proposed system performs code-filtering at each antenna for each user. It is shown that for fast fading channels, conventional sqare error based cost functions can yield poor results. A new method is proposed based on a variation of the SINK cost function coupled with optimal time variying channel estimation to improve signal tracking. The new beamforming method gives lower computations and faster convergence properties than existing algorithms in fast filing enviromnment. The simulation results show that the proposed algorithm has a better BER performance in the case of the time-varing channel.

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AN - SCOPUS:4143077028

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EP - 235

JO - IEEE Vehicular Technology Conference

JF - IEEE Vehicular Technology Conference

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T2 - 2003 IEEE 58th Vehicular Technology Conference, VTC2003-Fall

Y2 - 6 October 2003 through 9 October 2003

ER -

A reverselink beamforming based on simplex downhill algorithm for time-varying channel environments

Abstract

All Science Journal Classification (ASJC) codes

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