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Proceedings Paper

Battlefield wideband transceivers based on combined N-ary orthogonal signaling and M-ary PSK modulation
Author(s): Saleh Faruque; Payam Maveddat
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Paper Abstract

In this paper we present a method of bandwidth efficient coded modulation suitable for spread spectrum radio with AJ- LPI capabilities. In the proposed scheme, we first examine the error control properties of orthogonal codes and show their potential uses in FECC. The aspect of this paper that motivates us is that an orthogonal code has an equal number of 1's and 0's. This is to say that an n-bit orthogonal code has n/2 1's and n/2 o's; i.e., there are n/2 positions where 1's and 0's differ. Therefore the distance between two orthogonal codes is also n/2. Exploitation of this distance property of orthogonal codes is the basis of our development in this paper. We then offer a simple and cost-effective solution to coded modulation without bandwidth expansion. We intend to show that parallel signal processing in conjunction with N-ary orthogonal signaling and M-ary modulation techniques offer a cost-effective solution to bandwidth efficient coded modulation.

Paper Details

Date Published: 9 July 1999
PDF: 6 pages
Proc. SPIE 3709, Digitization of the Battlespace IV, (9 July 1999); doi: 10.1117/12.351600
Show Author Affiliations
Saleh Faruque, Nortel Networks (United States)
Payam Maveddat, Nortel Networks (United States)


Published in SPIE Proceedings Vol. 3709:
Digitization of the Battlespace IV
Raja Suresh, Editor(s)

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