A Hybrid Cognitive Radio Reporting Scheme for Wireless Regional Area Networks

Abstract

Due to the wireless network imperative impact, it is being widely used nowadays. Increasing number of users have also increased the requirement for bandwidth. Main challenges for these netwroks are to reduce overhead for communication, to utilize the bandwidth effectively and to minimize the reporting time .The effective solution for sensing and utilizimg the spectrum are provided through applying Cognitivr Radio Based Networks. Modern research trends in the domain of wireless networks are to address the challenges to minimize the reporting and sensing time for the wireless channel. This paper presents a hybrid scheme for reporting using the contention window for Wireless Regional Area Network. The contention window sensing mechanism is used in the proposed scheme that works in a cooperative manner where based on specific reliability criteria base station collects reports from all secondary usres.Only users with the highest probability are cconsidered eligible to send their reports. All reports are collected to the base station and the probability values are used to make global decsion. The proposed scheme and methosd is evaluated through simulations and performance is assessed of throughput, detection probability and detetction of false alarm. Results indicate the effectivness of proposed scheme over orderless reporting schemes.