Performance Evolution of PU and SU in an ARQ Based Cognitive Radio with Channel Probing

Provided by: Creative Commons
Topic: Mobility
Format: PDF
In cognitive radio the main objective is to transmit secondary user in primary transmission band without serious degradation of primary transmission. In this paper, the authors propose underlay CR scheme in which secondary pair listens and probe before it transmit in primary transmission band, where secondary transmitter receives the ARQ feedback from primary receiver. While probing, secondary transmitter sends a packet through cross channel to get additional information about channel strength. To achieve better transmission the main channel and cross channel divided in six regions.

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