Abstract:
This paper presents the theoretical analysis and simulation results of a communication system for application in physical layer for wireless sensor networks. The chip interleaving technique is investigated as the mean to mitigate fading in the channel. By theoretical derivations of closed form expressions for the bit error rate (BER), it is proved that the BER can be significantly improved using the interleaver/deinterleaver technique. Theoretical system analysis and derivations of the closed form BER expressions are based on discrete time domain representation of all signals in the system. The system is simulated using the spreading sequences and the modulation scheme proposed for wireless networks, in particular for wireless sensor networks. Simulation results confirmed the derived theoretical expressions.