Implementation of Hybrid ARQ (HARQ) error control algorithm for lifetime maximization and low overhead CDMA Wireless Sensor Network (WSN)

Abstract

The deployment of high densities of node due to the advancement in Wireless Sensor Network (WSN) technology had created the concern regarding the lifetime and error presented in the network. From the previous studies, Hybrid ARQ (HARQ) error control techniques can combat errors and indirectly, can reduce the energy consumption of sensor nodes. Based on the latest previous work, the HARQ algorithm was not able to combat the issue of interference levels properly that rises to Coded Division Multiple Access (CDMA). Not to mention, the implementation of high error correcting capabilities of Error Correcting Codes (ECC) in the module of HARQ on the unconducive environment will cause additional overhead. Thus, the problem regarding the interference and overhead in WSN becomes our motivation to research a better HARQ error control algorithm that follows the process of convectional Automatic Repeat Request (ARQ) and Forward Error Correction (FEC) with network condition estimation in CDMA WSN. This paper evaluated the different type of error correction schemes and existing HARQ over different Bit Length and Node Densities. This paper had demonstrated that as the network get congested, the error rates will get increased. The congested network had also increased the energy consumption that will shorter the lifetime of the network.