Abstract
This paper considers average input-output distortion minimization through joint optimization of source index assignment and modulation design. First, we derive the general optimization criterion, and discuss the possibility of simultaneous minimization of bit-error-rate (BER) and distortion. Secondly, we propose a novel source-aware information transmission approach by exploiting the non-uniformity in Gray-coded constellations. The proposed approach makes it possible for simultaneous BER and distortion minimization and outperforms the existing schemes with big margin when the original geometric structure of the quantization codebook can not be maintained in information transmission. The simplicity and power efficiency of the proposed source-aware non-uniform information scheme make it particularly attractive for systems with tight power constraints, such as wireless sensor networks and space communications.
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© 2006 Springer-Verlag Berlin Heidelberg
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Li, T., Wang, H., Ren, J. (2006). Non-uniform Information Transmission for Minimum Distortion in Wireless Networks. In: Cheng, X., Li, W., Znati, T. (eds) Wireless Algorithms, Systems, and Applications. WASA 2006. Lecture Notes in Computer Science, vol 4138. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11814856_38
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DOI: https://doi.org/10.1007/11814856_38
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-37189-2
Online ISBN: 978-3-540-37190-8
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