Performance Enhancement of 4G Cognitive Radio in Terms of Spectrum Efficiency

The evolution of various mobile generation from 1G to 4G is characterized by an increasing number of users with ever high bandwidth demands. These ever high bandwidth requirement calls for very high spectrum efficiency requirement. The increased spectrum efficiency comes at the cost of increase complexity. The spectrum efficiency is more scared in 4G. The proposed work increases spectrum efficiency keeping all other parameters such as amount of spectrum and cell-site spacing constant and at some load per user. Improvement of spectrum efficiency in 4G will make it more advanced and flexible. In order to improve spectrum efficiency, an ideal way is used to cognitive radio. The proposed work enhances the cognitive radio waveform using genetic algorithm (GA). The main advantage of GA is its multi-objective optimization technique. In GA, the cognitive radio defines as a chromosome and genes. This paper focus on improving spectrum efficiency in 4G using GA in cognitive radio.