Rate-adaptive CPM with punctured LDGM codes in slow-fading channels
2006 (English)In: 2006 IEEE International Symposium on Information Theory, Proceedings, NEW YORK: IEEE , 2006, 1324-1328 p.Conference paper (Refereed)
We investigate rate-adaptive continuous phase modulation (CPM) with punctured low-density generator matrix (LDGM) codes. We give an adaptive principal component analysis (PCA) CPM receiver for slow-fading channels. With the merit of. the PCA receiver, the new receiver avoids the eigenvalue decomposition in every symbol interval, and uses a fixed filter-bank. By changing the rate of the LDGM codes, the information rate of CPM signals is adapted to the channel state information (CSI). We use a low rate LDGM code as the mother code, and higher rates are achieved by puncturing the output of the LDGM codes. To exploit the rate-flexible property of punctured LDGM codes, a rate function is proposed to calculate the rate of each transmitted block. Thus, we can have a quasi-continuous information rate. Numerical results for MSK show that up to 11dB transmitted energy gain can be achieved in the low bit-error-rate region (smaller than 10(-3)), compared to the nonadaptive systems.
Place, publisher, year, edition, pages
NEW YORK: IEEE , 2006. 1324-1328 p.
Computer and Information Science
IdentifiersURN: urn:nbn:se:kth:diva-28987DOI: 10.1109/ISIT.2006.262041ISI: 000245289702072ISBN: 978-1-4244-0505-3OAI: oai:DiVA.org:kth-28987DiVA: diva2:395657
IEEE International Symposium on Information Theory Seattle, WA, JUL 09-14, 2006
QC 201102072011-02-072011-01-252011-11-08Bibliographically approved