OPTIMIZATION OF ADAPTIVE MODULATION AND CODING FOR VIDEO TRANSMISSION OVER A SINGLE-HOP WIRELESS NETWORK

Vijay C P, Supriya, Ankitha K, Renita Blossom Monteiro

Abstract: Adaptive modulation and coding (AMC) is a method in which automatic change in the modulation and forward error correction of a link to compensate for changes in link conditions due to the channel fading or interference. When compared with links using fixed coding, AMC can increase the throughput of a robust link by allowing it to dynamically adjust to a less robust modulation/coding resulting in higher throughput. In this project work, AMC is being considered for video transmission over wireless networks using NS2. Evalvid tool is used on NS2 for video transmission. 16-QAM, 64-QAM, BPSK and QPSK modulations are used and adapted in this simulation and analysis. Simulations are conducted for single-hop networks by considering sink node movement. In this project, the fixed modulation and AMC is being compared. From the simulation, it is observed that AMC yields better throughput, packet delivery ratio and PSNR compared to the fixed modulation.

Keywords: 16-QAM; 64-QAM; AMC; BPSK; Evalvid; QPSK

DOI: https://doi.org/10.15623/ijret.2016.0507076