Title :
Performance of convolutionally coded chip combiner and signal level based erasure DS receivers in pulsed noise interference
Author :
Juntti, Juhani K. ; Leppänen, Pentti A.
Author_Institution :
Telecommun. Lab., Oulu Univ., Finland
Abstract :
The performance of a chip combiner and a signal-level-based erasure direct-sequence (DS)/BPSK receiver was analyzed with Monte-Carlo simulations in an additive white Gaussian noise (AWGN) channel and in pulsed WGN interference using BPSK modulation and an optimum convolutional code of constraint length 7 and code rate 1/2. The receivers employ a soft decision Viterbi decoder. The receiver structures eliminate the need for a fast-acting circuit. The chip combiner DS receiver proved to be the most robust in the pulsed WGN channel and may combat the effects of pulsed noise interference. A continuous noise jammer was the worst-case jammer. The coding gain of both receivers compared with the uncoded system was 13.5 dB in the worst-case interference at a bit error rate of 10-3
Keywords :
Monte Carlo methods; decoding; error correction codes; interference (signal); jamming; phase shift keying; radio receivers; spread spectrum communication; white noise; AWGN channel; BPSK receiver; Monte-Carlo simulations; additive white Gaussian noise; code rate; coding gain; constraint length; continuous noise jammer; convolutional code; convolutionally coded chip combiner; direct sequence spread spectrum; erasure DS receivers; pulsed noise interference; signal level; soft decision Viterbi decoder; AWGN; Additive white noise; Binary phase shift keying; Circuit noise; Convolution; Convolutional codes; Gaussian noise; Interference; Jamming; Pulse modulation;
Conference_Titel :
Military Communications Conference, 1991. MILCOM '91, Conference Record, Military Communications in a Changing World., IEEE
Conference_Location :
McLean, VA
Print_ISBN :
0-87942-691-8
DOI :
10.1109/MILCOM.1991.258250
