We investigate the performance of a discrete-time all-analog-processing joint sourcechannel
coding system for the transmission of i.i.d. Gaussian and Laplacian sources
over AWGN channels. In the encoder, two samples of an i.i.d. source are mapped
into a channel symbol using a space-filling curve. Different from previous work in the
literature, MMSE decoding instead of ML decoding is considered, and we focus on both
high and low channel SNR regions. The main contribution of this paper is to show
that the proposed system presents a performance very close to the theoretical limits,
even at low SNR, as long as the curve parameters are properly optimized.
CitationHu, Y.; Garcia-Frias, J.; Lamarca, M. Analog joint source channel coding using space-filling curves and MMSE decoding. A: Data Compression Conference. "Data Compression Conference, DCC 2009". Snowbird, Utah: 2009.
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