Title :
Header detection in a centralised packet radio system with common DS/BPSK spread-spectrum modulation
Author_Institution :
Dept. of Electron. Eng., Seoul City Univ., Seoul, South Korea
Abstract :
The author addresses a multiple header detection issue for the centralised spread-spectrum packet radio system with common direct-sequence/binary phase-shift keying (DS/BPSK) modulation. Chernoff bounds on the false alarm and missed detection probabilities of the header are derived and computed for a specific class of spreading codes and header sequences. Using these performance bounds, the author compares the header sequences and finds a good one which can be received with small probability of false alarm and high probability of correct detection. He also determines a proper randomisation time to minimise the two bounds for given system parameters, and then calculates the allowable number of transmitting radios subject to a constraint on the bounds for this randomisation time.<>
Keywords :
codes; packet radio networks; phase shift keying; probability; signal detection; spread spectrum communication; Chernoff bounds; DS/BPSK; centralised packet radio system; direct-sequence/binary phase-shift keying; false alarm probability; header sequences; missed detection probabilities; multiple header detection; performance bounds; randomisation time; spread-spectrum modulation; spreading codes; system parameters;
Journal_Title :
Communications, Speech and Vision, IEE Proceedings I
