Coverage Probability and Achievable Rate Analysis of FFR-Aided Multi-User OFDM-Based MIMO and SIMO Systems

作     者：Kumar, Suman Kalyani, Sheetal Hanzo, Lajos Giridhar, K. 

作者机构：Indian Inst Technol Dept Elect Engn Madras 600036 Tamil Nadu India Univ Southampton Sch Elect & Comp Sci Southampton SO17 1BJ Hants England 

出 版 物：《IEEE TRANSACTIONS ON COMMUNICATIONS》 (IEEE Trans Commun)

年 卷 期：2015年第63卷第10期

页      面：3869-3881页

核心收录：

学科分类：0810[工学-信息与通信工程] 0808[工学-电气工程] 08[工学] 

基　　金：DST India under the IU-ATC project 

主　　题：Coverage probability rate co-channel interference FFR MU-MIMO SIMO 

摘      要：Expressions are derived for the coverage probability and average rate of both multi-usermultiple inputmultiple output (MU-MIMO) and single input multiple output (SIMO) systems in the context of a fractional frequency reuse (FFR) scheme. In particular, given a reuse region of 13 (FR3) and a reuse region of 1 (FR1) as well as a signal-to-interference-plus-noise-ratio (SINR) threshold S-th, which decides the user assignment to either the FR1 or FR3 regions, we theoretically show that: 1) the optimal choice of S-th which maximizes the coverage probability is S-th = T, where T is the target SINR required for ensuring adequate coverage, and 2) the optimal choice of Sth which maximizes the average rate is given by Sth = T , where T is a function of the path loss exponent, the number of antennas and of the fading parameters. The impact of frequency domain correlation amongst the OFDM sub-bands allocated to the FR1 and FR3 cell-regions is analysed and it is shown that the presence of correlation reduces both the coverage probability and the average throughput of the FFR network. Furthermore, the performance of our FFR-aidedMU-MIMO and SIMO systems is compared. Our analysis shows that the (2 x 2) MU-MIMO system achieves 22.5% higher rate than the (1 x 3) SIMO system and for lower target SINRs, the coverage probability of a (2 x 2) MU-MIMO system is comparable to a (1 x 3) SIMO system. Hence the former one may be preferred over the latter. Our simulation results closely match the analytical results.