CODE SHIFTED REFERENCE BASED COOPERATIVE USING MULTIPLE RELAYS IN ULTRA WIDE BAND COMMUNICATION SYSTEM

ABSTRACT. The technology of Ultra Wide band now a days is quite demanding due to the characteristics like its simple architecture, low power consumption and cost reliability but still it faces some deficiencies in term of its design to achieve low complexity and low cost. UWB systems experience problems while using digital signal processing technology and require high sampling frequencies. In this paper, the performance of UWB system in the cooperative communication environment is evaluated in terms of its Bit Error Rate for different number of relays and different average distances from source to destination node. The simulations are performed for both line of sight (LOS) and non-line of sight (NLOS) environment. Results from simulation shows that the performance of the system decreases by increasing average source to destination distance. The simulation results also shows that the system performs better in LOS channel environment as compared to NLOS channel environment. In the end results, it shows that the performance of the system increases by increasing the number of relay nodes to adequately large number