Improvement of noncoherent orthogonal coding by time overlapping

D. Raphaeli

doi:10.1049/ip-com:19941332

Improvement of noncoherent orthogonal coding by time overlapping

D. Raphaeli^*

^*Corresponding author for this work

California Institute of Technology

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

A simple way to increase the performance of noncoherent orthogonal coding is suggested. The idea is to overlap the transmitted symbols in time using an appropriate set of symbols. The best upper bound of the possible performance improvement in terms of E_b/N_o when transmitting over the AWGN channel is proven to be M/(M-1). An example of a set of orthogonal symbols which can be overlapped to achieve this bound is the Walsh functions. The theory is a generalisation of the relation which exists between binary FSK and differential PSK for M-ary orthogonal noncoherent modulation.

Original language	English
Pages (from-to)	309-311
Number of pages	3
Journal	IEE Proceedings: Communications
Volume	141
Issue number	5
DOIs	https://doi.org/10.1049/ip-com:19941332
State	Published - Oct 1994
Externally published	Yes

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Improvement of noncoherent orthogonal coding by time overlapping

Abstract

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