Throughput analysis of the nonorthogonal CSK/SS random access system on communication between users

The advanced wireless communications such as the sensor networks and ad-hoc networks requires the communications system that is flexible about the transmission power control and robust over multiple access interference. We have showed that the throughput of Code Shift Keying (CSK) random access network is high with the transmission power control. However, it is difficult to use transmission power control into the communication between users. This paper presents the throughput performance of the CSK random access network without transmission power control by theoretical analysis. This paper also presents the effect of dynamic assignment of PN sequence. In particular, we derive the throughput when each user select one of the plural PN sequences randomly. Consequently, the throughput of CSK random access network is better than that of the conventional system.