Title :
Capacity analysis of m-user self-encoded multiple access system in AWGN channels
Author :
Jang, Won Mee ; Nguye, Lim
Author_Institution :
Dept. of Comput. & Electron. Eng., Nebraska Univ., Lincoln, NE, USA
Abstract :
Self-encoded spread spectrum eliminates the need for traditional transmit and receive PN code generators. The enhanced transmission security arises from the stochastic nature of the unique spectrum spreading and de-spreading processes. In a self-encoded multiple access (SEMA) system, the number of users is not limited by the number of available sequences, unlike CDMA systems that employ PN codes such as m-, Gold or Kassami sequences. It is important from a design standpoint to specify the minimum number of chips to support multiple users for a specified quality of service and capacity in SEMA system. We find the number of chips for an m-user SEMA system to achieve the specified capacity and bit error rate. The capacity analysis provides a useful indication of the maximum number of users for a given spreading factor
Keywords :
AWGN; channel capacity; encoding; error statistics; multi-access systems; multiuser channels; personal communication networks; spread spectrum communication; AWGN channels; BER; CDMA systems; bit error rate; capacity analysis; m-user self-encoded multiple access system; multiple access interference; personal communications services; quality of service; self-encoded spread spectrum; spreading factor; stochastic spectrum de-spreading; stochastic spectrum spreading; system capacity; third generation PCS; transmission security; AWGN channels; Data security; Delay; Encoding; Multiaccess communication; Multiple access interference; Registers; Spread spectrum communication; Stochastic processes; Transmitters;
Conference_Titel :
Spread Spectrum Techniques and Applications, 2000 IEEE Sixth International Symposium on
Conference_Location :
Parsippany, NJ
Print_ISBN :
0-7803-6560-7
DOI :
10.1109/ISSSTA.2000.878115
