On the Throughput Maximization of Cognitive Radio using Cooperative Spectrum Sensing over Erroneous Control Channel

Banavathu, N R and Khan, Mohammed Zafar Ali (2016) On the Throughput Maximization of Cognitive Radio using Cooperative Spectrum Sensing over Erroneous Control Channel. In: 22nd National Conference on Communications (NCC), MAR 04-06, 2016, Guwahati, INDIA.

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Abstract

In this paper, we consider optimization of number of secondary users (M) by maximizing average channel throughput of the cognitive radio (CR) network for a given fusion rule (k-out-of-M) at the fusion center (FC) over erroneous control channel. For a given arbitrary positive integer value n, we obtain the mathematical expressions for optimal M for k = 1 + n and k = M -n rules at FC. Considering energy detector as an example for the analysis, following observations are made: 1) In the interval n is an element of [0, [M/2] - 1], as n increases optimal M increases. If FC uses k = 1 + n or k = M - n fusion rule, average channel throughput improves as n increases. 2) For a given n, average channel throughput obtained using k = M -n fusion rule is better compared to k = 1 + n fusion rule.

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