Performance analysis of collaborative communication in the presence of phase errors and AWGN in wireless sensor networks
Husnain A. Naqvi, Stevan Mirko Berber, Zoran A. Salcic · 2009
Collaborative communications in sensor networks is analyzed for the case when a phase error, which is result of a displacement error, exists in the system. In this paper we analyze a more realistic collaborative communication system that includes the influence of AWGN and phase error on the signal transmission. A mathematical analysis is performed to calculate the received power and bit error rate (BER). A phase error is assumed to be uniformly distributed over --πΔ to πΔ, where Δ is between 0.1 to 0.4. It is shown that received power increase as the number of sensor nodes (transmitters) increases, and that the received power decrease about 40% as the phase error increases from 0.1π to 0.4π. A detailed theoretical analysis and simulation reviled that the BER increase from 10-5 to 10-2 when the phase error increases from 0.1π to 0.4π.