Title :
Joint source channel coding strategies in Rayleigh channels for wireless systems
Author :
Mahalakshmi, K. ; Palanivelrajan, S.
Author_Institution :
M. Kumarasamy Coll. of Eng., M. Kumarasamy Coll. of Eng., Karur, India
Abstract :
Analog joint source channel coding techniques for a discrete time analog system is proposed and analyzed. The proposed system has all-analog-processing joint source-channel coding with MMSE, ML. Utilization of multiple antennas helps in bridging performance margin between ML and MMSE which arises in high signal to noise (SNR) scenario. Further, spatial diversity is proposed as a viable alternative to multiple antenna systems. The application of the Amplify-and-Forward (AF) protocol with single antenna nodes results in similar performance to that of a two antenna system with Maximal Ratio Combining (MRC). A performance analysis of different decoders for a wireless system is performed. MMSE performs nearly equal to that of constrained capacity of digital techniques with scalar quantization.
Keywords :
Rayleigh channels; amplify and forward communication; antenna arrays; combined source-channel coding; diversity reception; least mean squares methods; maximum likelihood decoding; protocols; quantisation (signal); MMSE; MRC; Rayleigh channels; all analog processing; amplify and forward protocol; analog joint source channel coding; constrained capacity; discrete time analog system; maximal ratio combining; maximum likelihood decoding; minimum mean square error methods; multiple antenna systems; multiple antennas; scalar quantization; single antenna nodes; spatial diversity; wireless systems; Channel coding; Decoding; Diversity reception; Fading; Protocols; Relays; Wireless communication; Joint source channel coding; Receive diversity; Spatial diversity;
Conference_Titel :
Information Communication and Embedded Systems (ICICES), 2014 International Conference on
Conference_Location :
Chennai
Print_ISBN :
978-1-4799-3835-3
DOI :
10.1109/ICICES.2014.7034125
