Throughput performance of MIMO cognitive networks

Author

Ghosh, A. ; Hamouda, Walaa

Author_Institution

Dept. of Electr. & Comput. Eng., Concordia Univ., Montréal, QC, Canada

fYear

2014

fDate

10-14 June 2014

Firstpage

209

Lastpage

214

Abstract

We analyze the throughput performance of cognitive ad-hoc networks. The designed network use modified IEEE 802.11 MAC protocol for media access purpose. Also, cognitive communication is limited by the interference imposed on primary users for the designed cognitive network. First, we determine the channel availability probability for this opportunistic network. We then use this probability to propose the embedded Markov model in the cognitive nodes. Using this Markov model we determine the normalized throughput of cognitive nodes. The normalized throughput, variance in throughput and percentage of dropped packets performance reveals that number of cognitive nodes, transmit power, packet length, primary users´ interference constraint, and number of antennas used have significant effect on the channel availability and throughput.

Keywords

MIMO communication; Markov processes; access protocols; ad hoc networks; antenna arrays; cognitive radio; radiofrequency interference; wireless LAN; IEEE 802.11 MAC protocol; MIMO cognitive networks; antennas; channel availability probability; cognitive ad hoc networks; cognitive communication; cognitive nodes; dropped packets performance; embedded Markov model; media access purpose; normalized throughput; opportunistic network; packet length; primary users interference constraint; throughput performance; transmit power; Ad hoc networks; Analytical models; Availability; Interference; Markov processes; Media Access Protocol; Throughput; CSMA/CA; Cognitive networks; Markov chain; throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications (ICC), 2014 IEEE International Conference on

Conference_Location

Sydney, NSW

Type

conf

DOI

10.1109/ICC.2014.6883320

Filename

6883320