Research on the Joint Source Channel Coding of Wireless Sensor Network

Distributed Joint Source-Channel Coding in Wireless Sensor Networks

Considering the fact that sensors are energy-limited and the wireless channel conditions in wireless sensor networks, there is an urgent need for a low-complexity coding method with high compression ratio and noise-resisted features. This paper reviews the progress made in distributed joint source-channel coding which can address this issue. The main existing deployments, from the theory to pra...

Fast Joint Source-channel Coding Algorithms for Internet /wireless Multimedia

We consider joint source-channel coding for Internet and wireless multimedia applications. Embedded source bitstreams are protected against noise in both binary symmetrie channels (BSC) and packet erasure channels. For each channel, a local search joint source-channel coding (JSCC) algorithm is proposed to search for the optimal unequal error protection (UEP) scheme. Each algorithm starts with ...

Multiresolution Joint Source-Channel Coding for Wireless Channels

Joint Source-Channel CELP Coding

The method of speech coding CELP is extensively used in much voice communication-, multimedia-, video conference and other systems. There are a lot of papers related to CELP coding characteristics improvement for a better speech quality after decoding. Most of the papers are dedicated to lower the rate of CELP coded speech transmission. One problem related to low rate CELP speech transmission w...

Distributed Joint Source-Channel Coding with Raptor Codes for Correlated Data Gathering in Wireless Sensor Networks

Correlated data gathering in body area networks calls for systems that perform efficient compression and reliable transmission of the measurements, while imposing a small computational burden at the sensors. Highly-efficient compression mechanisms, e.g., adaptive arithmetic entropy encoding, do not address the problem adequately, as they have high computational demands. In this paper, we propos...