Performance of OFDM-Based Cognitive Radio
نویسندگان
چکیده
The effect of spectrum sensing errors on the performance of orthogonal frequency division multiplexing based cognitive radio transmission can be evaluated by deriving the expression for the average bit error rate. This depends on various parameters like transmission and spectrum sensing parameters. Here, we consider the case with adding a carrier frequency offset. The spectrum sensing errors of OFDM-based cognitive radio transmission causes performance degradation of the system due to interference and depends on transmission and spectrum sensing parameters. This can be reduced by using a convex optimization technique like beamforming in OFDM-based cognitive radio. IndexTerms, bit error rate, cognitive radio system, convex optimization , OFDM, signal to interference noise ratio, spectrum sensing.
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