Differential encoding for quadrature-amplitude modulation

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Scopus citations


In this paper, we propose a novel differential encoder for QAM (quadrature-amplitude modulation), by a look-up table instead of a rule. Using a table for differential encoding has the advantages of both low complexity and good error performance. We propose algorithms to construct the table for maximizing the minimum noncoherent distance and minimizing the number of different data bits between two near codewords. For 16QAM, we show that the differential encoder obtained by the proposed algorithms is optimal in terms of minimum noncoherent distance

Original languageEnglish
Title of host publication2010 IEEE 71st Vehicular Technology
StatePublished - 2010
Event2010 IEEE 71st Vehicular Technology Conference, VTC 2010-Spring - Taipei, Taiwan
Duration: 16 May 201019 May 2010

Publication series

NameIEEE Vehicular Technology Conference
ISSN (Print)1550-2252


Conference2010 IEEE 71st Vehicular Technology Conference, VTC 2010-Spring


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