Weight Pattern based Adaptive Constant Modulus Optimization Technique: A Novel Approach to PAPR Reduction For Wireless VOIP

摘要

4G is the recent flawless mobility network, enhancing the tech world by providing greater data rate & wider coverage over its older generations but still some drawbacks are encountered. The most needed amendment and requirement was of intelligent mobility management techniques that use IP technology to achieve global roaming among various access technologies. One way is use of 4G, wherein spectral efficiency, capacity, latency & high data rate were available. To further achieve these services, the 4G network is based on IP protocol of packet switching system. The use of 4G introduces limitations in QoS in uplink due to high value of PAPR, which results in lesser efficiency caused by cyclic/guard interval, lesser frequency synchronization & more chances of Doppler Shift. So to reduce PAPR by keeping the complexity as low as possible as compared to existing techniques used for PAPR reduction. Otherwise PAPR in uplink could lead to higher bit rate error, less spectral efficiency & channel aliasing resulting in amplification in HPA, increased complexity & higher cost. A novel PAPR reduction technique is proposed, inspired by CMA property known as WPACMOT for wireless VOIP services. Hence to change scales of convergence with alter step size for optimal solution. Simulation shows the efficacy of projected technique.