Proposal and evaluation of system diversity for software defined radio

This paper proposes the concept of system diversity on software defined radio (SDR) and investigates the effectiveness of system diversity by using a concrete simulation model. System diversity allows the wireless communication system to be dynamically changed in addition to the signal processing algorithm or modulation/coding scheme being used. To clarify the validity of system diversity, we examine a system simulation model consisting of three wireless communication systems; algorithms are introduced to show how system diversity can be controlled using the QoS parameters of the received signal level, the data transmission rate and the channel capacity. The process by which system diversity switching is triggered is elucidated and a practical example is introduced. Simulation results confirm that system diversity offers higher performance in terms of data throughput and system channel capacity than existing wireless communication systems