Accession Number : ADA303107

Title :   Cyclostionary Spectral Analysis of Typical Satcom Signals using the FFT Accumulation Method,

Corporate Author : DEFENCE RESEARCH ESTABLISHMENT OTTAWA (ONTARIO)

Personal Author(s) : Tom, Caroline

PDF Url : ADA303107

Report Date : DEC 1995

Pagination or Media Count : 34

Abstract : The suitability of cyclostationary spectral analysis for the detection and identification of typical Satcom signals is examined. An overview of the general equations for cyclostationary spectral analysis is presented. The cyclic spectrum is derived for some common Satcom modulation schemes. Cyclic spectrum estimation techniques are described with particular emphasis on the time smoothed approach. Key aspects of a computationally efficient algorithm for computing the cyclic spectrum estimates, called the 'Fast Fourier Transform (FFT) Accumulation Method' (FAM) are outlined. The FAM algorithm is implemented on a Digital Signal Processor/Personal Computer (DSP/PC) board containing a TMS32Oc51 processor chip and used to compute the cyclic spectrum for various phase shift keyed (PSK) and spread spectrum waveforms. The results are presented and discussed.

Descriptors :   *SATELLITE COMMUNICATIONS, *FAST FOURIER TRANSFORMS, *SPREAD SPECTRUM, ALGORITHMS, WAVEFORMS, CANADA, EFFICIENCY, RADIO SIGNALS, SPECTRUM ANALYSIS, PHASE SHIFT KEYERS.

Subject Categories : Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE