Soft-limiter receivers for coded DS/DPSK systems

Author

Stüber, Gordon L.

Author_Institution

Sch. of Electr. Eng., Georgia Inst. of Technol., Atlanta, GA, USA

fYear

1988

fDate

12-15 Jun 1988

Firstpage

1415

Abstract

The performance of a quantized soft-limiter metric evaluated for coded DS/DPSK (direct-sequence/differential phase-shift keying) in the presence of worst-case pulse-jamming and background noise. This metric is very easy to implement and does not require jammer state information. Instead, it relies on the use of a receiver threshold, which must be adjusted according to the received signal energy. The performance of this metric is evaluated by using the cut-off-rate criterion, and a number of specific convolutional codes. It is shown that the metric can perform within 0.4 dB of the maximum-likelihood soft-decision metric and perfect jammer-state information

Keywords

codes; encoding; jamming; noise; phase shift keying; spread spectrum communication; background noise; convolutional codes; cut-off-rate criterion; direct-sequence/differential phase-shift keying; jammer state information; quantised soft-limiter metric; receiver threshold; signal energy; worst-case pulse-jamming; Additive white noise; Background noise; Differential quadrature phase shift keying; Gaussian noise; Interference; Jamming; Maximum likelihood decoding; Modulation coding; RAKE receivers; Spread spectrum communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 1988. ICC '88. Digital Technology - Spanning the Universe. Conference Record., IEEE International Conference on

Conference_Location

Philadelphia, PA

Type

conf

DOI

10.1109/ICC.1988.13782

Filename

13782