JSCC Using Bandwidth Reducing and Expanding Mappings

摘要：

A joint source channel coding scheme has been proposed to optimize the mapping vector quantizer (VQ)-modulator symbols. The proposed tow-step-algorithm optimizes first the mapping source codes-modulator symbols, and then optimizes VQ against the channel noise. To reach the target codebook size these steps are repeated iteratively. To show the proposed algorithm performance, it has been applied to transmission of a memoryless Gaussian source samples on Gaussian channel. The simulation results illustrate that a significant gain in terms of channel signal-to-noise ratio compared to a published result based on simulated annealing (SA) using a dynamic scaling of the signal.

关键词： Channel optimized VQ(COVQ) joint optimization,PAM mapping

作者: Hatem El Meddeb Noureddine Hamdi Ammar Bouallègue

作者单位: 6COM Laboratory - ENIT Tunis,Tunisia

会议类型: 国际会议

会议名称: The 11th IEEE International Conference on Communications Systems(第11届电子和电气工程师协会国际通信系统会议)(IEEE ICCS 2008)

会议地点: 广州

会议语种:英文

在线出版日期: 2008-11-19（万方平台首次上网日期，不代表论文的发表时间）