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Performance Analysis of Cooperative Cellular Relaying Networks

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2 Author(s)
Hyungseok Yu ; Dept. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA ; Stuber, G.L.

This paper investigates user cooperation diversity systems with decode-and-forward (DF) selection relaying over nonidentical shadowed Nakagami/shadowed Nakagami channels in cellular networks. The outage probability and the system spectral efficiency are evaluated as a function of a cochannel reuse factor and compared with multireceive (Rx) antenna systems for omnidirectional and sectorized cells in both the uplink and the downlink. The results of this paper show that the system spectral efficiency of the proposed system shows comparable performance with that of the single-Rx antenna system, and the outage probability of the system outperforms that of the dual-Rx antenna system in a particular region of the cell with respect to the relay location. The particular region shows that the DF cooperative diversity provides better performance in the uplink than in the downlink, but unlike in the downlink, the impact of cochannel interference (CCI) on the relay in the uplink degrades system performance, in spite of the cell sectorization.

Published in:

Vehicular Technology, IEEE Transactions on  (Volume:62 ,  Issue: 2 )