Title :
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
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;
Conference_Titel :
Communications, 1988. ICC '88. Digital Technology - Spanning the Universe. Conference Record., IEEE International Conference on
Conference_Location :
Philadelphia, PA
DOI :
10.1109/ICC.1988.13782
