Feasibility of SINR Guarantees for Downlink Transmissions in Relay-Enabled OFDMA Networks

被引：0
|
作者：
Kulkarni, Vishwesh V. [2 ]
Lim, Joo Ghee [3 ]
Jha, Sanjay K. [1 ]
机构：
[1] Univ New South Wales, Sch Comp Sci & Engn, Sydney, NSW 2033, Australia
[2] Indian Inst Technol, Dept Elect Engn, Bombay 400076, Maharashtra, India
[3] Singapore Polytech, Sch Elect & Elect Engn, Singapore, Singapore
来源：
2011 50TH IEEE CONFERENCE ON DECISION AND CONTROL AND EUROPEAN CONTROL CONFERENCE (CDC-ECC) | 2011年
基金：
澳大利亚研究理事会;
关键词：
OFDMA; downlink transmission; SINR feasibility; M-matrices; POWER-CONTROL; ACCESS;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
We examine the feasibility of the signal-to-noise-and-interference (SINR) guarantees for downlink transmissions in relay-enhanced OFDMA networks that feature stationary users. The constraints are as follows: (i) the SINR of every user exceeds a certain threshold and (ii) the transmit power for each transmission is less than a certain threshold. We first derive a set of necessary and sufficient feasibility conditions for the specific case in which a user i served by the relay station shares at most one subchannel with a user j served by the base station. These conditions are a function of the target SINR values and the channel gains, and derived using a property of an M-matrix. We then extend these results to the case of networks featuring multiple base stations and multiple relays. Our conditions to check the feasibility can be easily implemented in practice.
引用
收藏
页码：3783 / 3788
页数：6
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