Title :
Impact of Multi-Antenna on the Performance of the Ad-Hoc WLAN in a Slow Rayleigh Fading Channel
Author :
Pourahmadi, Vahid ; Jamali, S. Hamidreza ; Safavi-Naieeni, Reza
Author_Institution :
Sch. of Electr. & Comput. Eng., Tehran Univ.
Abstract :
In this paper, we evaluate the impact of the multi-antenna schemes on the performance of the ad-hoc WLAN systems in a quasi-static Rayleigh fading environment. We use a Markov chain model to calculate the saturated throughput of an IEEE 802.11 network working in an ad-hoc mode. The throughput has a random nature due to the slowly random changing environment. Hence, the cumulative distribution function (CDF) of the throughput is considered as the performance measure. The effect of different multi-antenna schemes, such as the Alamouti scheme and the maximum ratio receiver combining (MRRC) technique, on this performance measure is evaluated based on the obtained analytical results. We also study the effect of different system parameters on the ad-hoc multi-antenna WLAN performance
Keywords :
Markov processes; Rayleigh channels; ad hoc networks; antenna arrays; wireless LAN; Alamouti scheme; CDF; IEEE 802.11 network; MRRC technique; Markov chain model; ad-hoc WLAN; cumulative distribution function; maximum ratio receiver combining technique; multi-antenna schemes; quasi-static Rayleigh fading environment; slow Rayleigh fading channel; wireless local area networks; Ad hoc networks; Communication industry; Distribution functions; Fading; Media Access Protocol; Performance analysis; Physical layer; Rayleigh channels; Throughput; Wireless LAN; Ad-hoc; Alamouti scheme; CDF; IEEE 802.11; MRRC; quasi-static channel; saturated throughput;
Conference_Titel :
Vehicular Technology Conference, 2006. VTC 2006-Spring. IEEE 63rd
Conference_Location :
Melbourne, Vic.
Print_ISBN :
0-7803-9391-0
Electronic_ISBN :
1550-2252
DOI :
10.1109/VETECS.2006.1683039
