On the exact bit error performance of opportunistic network coding in wireless networks

Abstract

While fully opportunistic network coding is one of the pioneer works to successfully implement network coding in wireless networks, the analytical model of its performance is still not well understood. In particular, the end-to-end average bit error rate of the scheme is still unclear due to the complexity of the scheme. In this paper we provide a generalized model to analyze the performance of regenerative multi-hop wireless ad hoc networks where opportunistic network coding is applied. By using the model, a closed-form expression of the exact average end-to-end bit error rate of the system over Rayleigh fading channels can be derived. The results obtained in our work allow us to have a more complete understanding of the factors that affect performance, especially the error propagation when packets traverse the network.

A Review on Minimization of BER and Power of Ad hoc Network

“…So to minimize the BER interferes density should be low in high interference environment. From [10] and [12] MPR selection algorithm [18] 10 -7 at 20 dB up to 50 nodes from base MPR selection BER decrease packet delivery ratio increase this improves the through put.…”

“…A generalized model of opportunistic Network Coding (NC) that allow obtaining a close form expression of the average end to end BER to regenerate multi hoc communication system showing [12] the effect of different factors on BER when transmitted signal is modulated by BPSK/QPSK message bits from a flat Rayleigh fading channel with balance link condition. The probability found in the network encoded packet at the constant intermediate node.…”

“…Minimum BER and SNR Analysis M-PSK, M=2,4 [12] 10 -3 at 16 dB SNR Encoded packets have less BER than without encoded. The BER decrease power saving increase.…”