A high coding-gain reduced-complexity serial concatenated error-control coding solution for wireless sensor networks

Abstract

Error-Control Coding (ECC) now plays an important role in wireless transceivers because it helps to increase link reliability and lower required transmit power. One popular problem of ECC implementation is the trade-off between high coding-gain and decoder's complexity. In this paper, we propose a serial concatenated ECC solution which is a combination of truncated-iteration layered-decoding LDPC block code with low-constraint Viterbi decoder at low code rate. Simulation results show that very high coding-gain and reduced-complexity are achieved. This paper also gives a supposition about applying low code rate ECC for less-active wireless nodes in Wireless Sensor Networks (WSN) to reduce transmit power and expand sensor network topology.