Analytical evaluation of hybrid feedback scheme for OFDMA system

doi:10.1016/S1005-8885(13)60066-7

中国邮电高校学报(英文) ›› 2013, Vol. 20 ›› Issue (4): 34-38.doi: 10.1016/S1005-8885(13)60066-7

Analytical evaluation of hybrid feedback scheme for OFDMA system

孙巧云

1. Electronic and Information Engineering Department, Beijing City University, Beijing 100083, China 2. College of Electronic Information Engineering, Inner Mongolia University, Hohhot 010021, China

收稿日期:2013-01-16 修回日期:2013-04-15 出版日期:2013-08-31 发布日期:2013-08-30
通讯作者: 孙巧云 E-mail:sunqy.bupt@gmail.com
基金资助:
This work was supported by Key Laboratory of Universal Wireless Communications (KFKT-2010104), the National Natural Science Foundation of China (61001124), BCU (JYB201120), and Beijing City Special Finance Fund (PXM2012_014202_000201).

Analytical evaluation of hybrid feedback scheme for OFDMA system

1. Electronic and Information Engineering Department, Beijing City University, Beijing 100083, China 2. College of Electronic Information Engineering, Inner Mongolia University, Hohhot 010021, China

Received:2013-01-16 Revised:2013-04-15 Online:2013-08-31 Published:2013-08-30
Contact: SUN Qiao-Yun E-mail:sunqy.bupt@gmail.com
Supported by:
This work was supported by Key Laboratory of Universal Wireless Communications (KFKT-2010104), the National Natural Science Foundation of China (61001124), BCU (JYB201120), and Beijing City Special Finance Fund (PXM2012_014202_000201).

摘要/Abstract

摘要： This paper first introduces the performance analysis of two classical channel quality indicator (CQI) feedback schemes which are best-n feedback and the threshold based feedback and derives the mathematical expressions of average capacity which is described by Theorem 1 and 2. Then, a reduced feedback scheme is designed for multiple traffics and multi-channel. The novel scheme combines the best-n feedback and the threshold based feedback together to reduce the feedback overhead. The proposed scheme can not only guarantee the quality of service (QoS) requirement of real time (RT) traffic but also reduce feedback overhead at the cost of a marginal increased downlink overhead. Simulation results demonstrated the good performance of the proposed feedback scheme.

关键词: opportunistic scheduling, CQI, reduced feedback, proportional fairness (PF)

Abstract: This paper first introduces the performance analysis of two classical channel quality indicator (CQI) feedback schemes which are best-n feedback and the threshold based feedback and derives the mathematical expressions of average capacity which is described by Theorem 1 and 2. Then, a reduced feedback scheme is designed for multiple traffics and multi-channel. The novel scheme combines the best-n feedback and the threshold based feedback together to reduce the feedback overhead. The proposed scheme can not only guarantee the quality of service (QoS) requirement of real time (RT) traffic but also reduce feedback overhead at the cost of a marginal increased downlink overhead. Simulation results demonstrated the good performance of the proposed feedback scheme.

Key words: opportunistic scheduling, CQI, reduced feedback, proportional fairness (PF)

SUN Qiao-yun, CHAI Wen-yan, YANG Xiu-yun, SUN Kai, WU Cui-ting. Analytical evaluation of hybrid feedback scheme for OFDMA system[J]. Acta Metallurgica Sinica(English letters), 2013, 20(4): 34-38.

参考文献

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Analytical evaluation of hybrid feedback scheme for OFDMA system

Analytical evaluation of hybrid feedback scheme for OFDMA system

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