Minimizing point-to-point transmission energy with error correction coding and transmission power control
Junjun Gu, Gang Qu, Aihong Yao, Ahmed Bouridane · 2008
Energy efficiency has become an important concern for the design of communication systems, particularly the wireless sensor networks where recharging battery might not be feasible. In this paper, we investigate how error correction coding (ECC) and transmission power level can impact the packet loss rate and transmission energy. We focus our analysis on the direct point-to-point communication, which is the basic unit for any data communication, in three popular scenarios: only one re-transmission is allowed; multiple re-transmissions are made to guarantee a given packet loss rate; and re-transmitting until the packet is received correctly. For each case, we derive formulas to show whether and when ECC and power control should be used. We then propose a 2-phase approach that uses ECC and power control simultaneously to reduce energy while maintaining the required packet loss rate. Numerical simulation validates our claims and indicates that the proposed 2-phase approach can reduce transmission energy significantly.