Title :
Performance Analysis of Cooperative Cellular Relaying Networks
Author :
Hyungseok Yu ; Stuber, Gordon L.
Author_Institution :
Dept. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
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.
Keywords :
Nakagami channels; cellular radio; cochannel interference; cooperative communication; decode and forward communication; diversity reception; omnidirectional antennas; probability; radio links; receiving antennas; relay networks (telecommunication); CCI; DF cooperative diversity; DF selection relaying; cell sectorization; cochannel interference; cochannel reuse factor; cooperation diversity systems; cooperative cellular relaying networks; decode-and-forward selection relaying; dual-Rx antenna system; multireceive antenna systems; nonidentical shadowed Nakagami channels; omnidirectional cells; outage probability; performance analysis; relay location; sectorized cells; shadowed Nakagami channels; single-Rx antenna system; system spectral efficiency; uplink degradation system; Diversity reception; Downlink; Interference; Nakagami distribution; Probability density function; Relays; Cellular networks; cochannel interference (CCI); cochannel reuse factor; cooperative diversity; decode-and-forward (DF); maximal ratio combining (MRC); shadowed Nakagami-$m$ fading;
Journal_Title :
Vehicular Technology, IEEE Transactions on
DOI :
10.1109/TVT.2012.2223248
