Performance evaluation of threshold-based power allocation algorithms for down-link switched-based parallel scheduling

Sung Sik Nam; Hong Chuan Yang; Mohamed Slim Alouini; Khalid A. Qaraqe

doi:10.1109/TWC.2009.071026

Performance evaluation of threshold-based power allocation algorithms for down-link switched-based parallel scheduling

Sung Sik Nam, Hong Chuan Yang, Mohamed Slim Alouini, Khalid A. Qaraqe

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

5 Scopus citations

Abstract

In this paper, we propose threshold-based power allocation algorithms for a recently proposed down-link parallel multiuser scheduling (SBS) scheme. The proposed algorithms re-allocate the extracted excess transmit power from some acceptable users to those unacceptable users among scheduled users. After the power allocation process, more unacceptable users will enjoy acceptable link reliability as the number of effective acceptable users with an acceptable receive SNR level among the scheduled users is increased without any additional down-link transmit power. Some selected numerical results, show that the proposed power allocation algorithms offer a certain improvement in average spectral efficiency (ASE) and an increase in the average number of effective acceptable users. Although the average bit error rate (BER) performance degrades, especially when the average SNR is close to the SNR threshold, this average BER performance still meets the average BER requirement.

Original language	English (US)
Article number	4907447
Pages (from-to)	1744-1753
Number of pages	10
Journal	IEEE Transactions on Wireless Communications
Volume	8
Issue number	4
DOIs	https://doi.org/10.1109/TWC.2009.071026
State	Published - Apr 2009
Externally published	Yes

Keywords

Adaptive modulation
High-speed downlink packet access (HSDPA)
Multiuser diversity
Opportunistic scheduling
Power allocation
Spectral efficiency

ASJC Scopus subject areas

Applied Mathematics
Electrical and Electronic Engineering
Computer Science Applications

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10.1109/TWC.2009.071026

Cite this

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title = "Performance evaluation of threshold-based power allocation algorithms for down-link switched-based parallel scheduling",

abstract = "In this paper, we propose threshold-based power allocation algorithms for a recently proposed down-link parallel multiuser scheduling (SBS) scheme. The proposed algorithms re-allocate the extracted excess transmit power from some acceptable users to those unacceptable users among scheduled users. After the power allocation process, more unacceptable users will enjoy acceptable link reliability as the number of effective acceptable users with an acceptable receive SNR level among the scheduled users is increased without any additional down-link transmit power. Some selected numerical results, show that the proposed power allocation algorithms offer a certain improvement in average spectral efficiency (ASE) and an increase in the average number of effective acceptable users. Although the average bit error rate (BER) performance degrades, especially when the average SNR is close to the SNR threshold, this average BER performance still meets the average BER requirement.",

keywords = "Adaptive modulation, High-speed downlink packet access (HSDPA), Multiuser diversity, Opportunistic scheduling, Power allocation, Spectral efficiency",

author = "Nam, {Sung Sik} and Yang, {Hong Chuan} and Alouini, {Mohamed Slim} and Qaraqe, {Khalid A.}",

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AU - Alouini, Mohamed Slim

AU - Qaraqe, Khalid A.

PY - 2009/4

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Performance evaluation of threshold-based power allocation algorithms for down-link switched-based parallel scheduling

Abstract

Keywords

ASJC Scopus subject areas

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