Transmission of non-linear binary input functions over a CDMA system

Mohammadi, E ; Sharif University of Technology | 2012

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  1. Type of Document: Article
  2. DOI: 10.1109/ISIT.2012.6283491
  3. Publisher: 2012
  4. Abstract:
  5. We study the problem of transmission of binary input non-linear functions over a network of mobiles based on CDMA. Motivation for this study comes from the application of using cheap measurement devices installed on personal cellphones to monitor environmental parameters such as air pollution, temperature and noise level. Our model resembles the MAC model of Nazer and Gastpar except that the encoders are restricted to be CDMA encoders. Unlike the work of Nazer and Gastpar whose main attention is transmission of linear functions, we deal with non-linear functions with binary inputs. A main contribution of this paper is a lower bound on the computational capacity for this problem. While in the traditional CDMA system the signature matrix of the CDMA system preferably has independent rows, here the signature matrix of the CDMA system is viewed as the parity check matrix of a linear code, reflecting our treatment of the interference. We also introduce the problem of Slepian-Wolf compression with the same compression matrix
  6. Keywords:
  7. Binary inputs ; CDMA system ; Cell phone ; Computational capacity ; Environmental parameter ; Linear codes ; Linear functions ; Lower bounds ; MAC models ; Measurement device ; Noise levels ; Nonlinear functions ; Parity check matrices ; Slepian-wolf ; Code division multiple access ; Functions ; Information theory ; Matrix algebra
  8. Source: IEEE International Symposium on Information Theory - Proceedings, 1 July 2012 through 6 July 2012 ; July , 2012 , Pages 1401-1405 ; 9781467325790 (ISBN)
  9. URL: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6283491