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A Combined Coding and Modulation to Support Both Coherent and Non-coherent Ultra-Wideband Receivers Tomoko MATSUMOTO Ryuji KOHNO Publication IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Vol.E90-A No.6 pp.1252-1256 Publication Date: 2007/06/01 Online ISSN: 1745-1337 DOI: 10.1093/ietfec/e90-a.6.1252 Print ISSN: 0916-8508 Type of Manuscript: LETTER Category: Coding Theory Keyword: ultra-wideband, low data-rate wireless personal area networks, super-orthogonal convolutional codes, Full Text: PDF(212.3KB)>>
Summary: This letter proposes a simple combined coding and modulation based on super-orthogonal convolutional codes (SOCs) in order to support both coherent and non-coherent ultra-wideband (UWB) receivers. In the proposed scheme, the coherent receivers obtain a coding gain as large as the SOC while simultaneously supporting non-coherent receivers. In addition, their performance can be freely adapted by changing the encoder constraint length and the number of PPM slots according to its application. Thus, the proposal enables a more flexible system design for low data-rate UWB systems. | ||||||||||
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