Title :
A rapid acquisition of PN sequences for DS/SS systems based on a truncated SPRT
Author :
Lee, Yong-Hwan ; Tantaratana, Sawasd
Author_Institution :
Codex Corp., Canton, MA, USA
Abstract :
The authors study a rapid coherent acquisition scheme, using a truncated sequential-probability-ratio test (TSPRT), for direct-sequence-spread spectrum (DS/SS) systems. Since the partial correlation of pseudonoise (PN) sequences is difficult to characterize, the worst-case partial correlation is considered. Linearized bounds of the partial correlation are used for designing the TSPRT so that the resulting test can achieve the prescribed acquisition condition. The design parameters of the TSPRT are chosen so that the average sample size (ASN) is minimized while keeping the maximum ASN smaller than that of the fixed dwell scheme with similar false alarm and miss probabilities. Some simulation results are obtained, and they agree well with analytic results
Keywords :
correlation methods; filtering and prediction theory; probability; signal detection; spread spectrum communication; DS/SS systems; average sample size; design parameters; direct-sequence-spread spectrum; linearized bounds; pseudonoise sequences; rapid coherent acquisition scheme; signal detection; truncated sequential-probability-ratio test; worst-case partial correlation; Additive white noise; Analytical models; Demodulation; Gaussian noise; Hardware; Matched filters; Parallel processing; Sequential analysis; Spread spectrum communication; System testing;
Conference_Titel :
Military Communications Conference, 1989. MILCOM '89. Conference Record. Bridging the Gap. Interoperability, Survivability, Security., 1989 IEEE
Conference_Location :
Boston, MA
DOI :
10.1109/MILCOM.1989.104045
