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Capacity analysis of m-user self-encoded multiple access system in AWGN channels

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2 Author(s)
Won Mee Jang ; Dept. of Comput. & Electron. Eng., Nebraska Univ., Lincoln, NE, USA ; Lim Nguyen

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

Published in:

Spread Spectrum Techniques and Applications, 2000 IEEE Sixth International Symposium on  (Volume:1 )

Date of Conference:

Sep 2000