ANTIJAM PERFORMANCE OF FAST FREQUENCY-HOPPED M-ARY NCFSK - AN OVERVIEW.

被引：0

作者：

Bird, John S. ^{[1
]}

Felstead, E.Barry ^{[1
]}

机构：

[1] Defense Research Establishment,, Ottawa, Ont, Can, Defense Research Establishment, Ottawa, Ont, Can

来源：

IEEE Journal on Selected Areas in Communications | 1986年 / SAC-4卷 / 02期

关键词：

DIGITAL COMMUNICATION SYSTEMS - Military Applications - FREQUENCY MODULATION - Frequency Shift Keying - RADIO TRANSMISSION - Spread Spectrum - SIGNAL THEORY - Mathematical Models;

D O I：

10.1109/jsac.1986.1146317

中图分类号：

学科分类号：

摘要：

The antijam performance of M-ary noncoherent FSK with fast frequency hopping (one or more hops per symbol) is studied. A summary of terminology, definitions, and an overview of the literature are given. A general analysis method based upon circularly symmetric signal theory is presented. It provides a means for exact analysis of performance for M-ary operation with any combination of signal tone distribution (frequency bins contiguously or noncontiguously spaced), jamming distribution, jamming form (partial-band noise or multitone), and receiver system noise. Some previous results are derived as subcases of the general theory. A simple robust diversity combining technique of transmitting a symbol on L hops followed by a majority vote decision is found to provide significant performance improvements. This improvement is comparable to that obtained by most error-correction coding methods. Illustrative calculations of performance were chosen to indicate trends rather than to be exhaustive. Performance is usually presented as probability of bit error versus fraction of the band jammed to emphasize worst-case operation.

引用

页码：216 / 233