Title :
Performance of DS/SSMA packet radio system using group coding technique
Author_Institution :
Dept. of Electron. Eng., Seoul City Univ., South Korea
Abstract :
A spread-spectrum multiple-access (SSMA) scheme that utilizes a group coding technique using a subset of signature sequences, in which the size of the subset is considerably less than the number of radios in the system, is proposed for packet radio communications. A direct-sequence spread-spectrum (DS-SS) signaling is adopted to combat fading effects through the multipath diversity reception exploiting the property of high time resolution. System performance is investigated in terms of the error rate achievable by deriving the probability distribution of the number of collision-free paths and characterizing the effects of the primary and secondary user interferences
Keywords :
coding errors; diversity reception; error statistics; fading; land mobile radio; multi-access systems; multipath channels; packet radio networks; probability; pseudonoise codes; radiofrequency interference; sequences; spread spectrum communication; DS-SS signaling; DS/SSMA packet radio system; collision-free paths; direct-sequence spread-spectrum; error rate; fading effects; group coding; high time resolution; mobile radio; multipath diversity reception; packet radio communications; primary user interference; probability distribution; secondary user interference; signature sequences; spread-spectrum multiple-access; system performance; Diversity reception; Fading; Frequency; Packet radio networks; Performance gain; Pulse modulation; RF signals; Signal resolution; Spread spectrum communication; System performance;
Conference_Titel :
Military Communications Conference, 1994. MILCOM '94. Conference Record, 1994 IEEE
Conference_Location :
Fort Monmouth, NJ
Print_ISBN :
0-7803-1828-5
DOI :
10.1109/MILCOM.1994.473971
