Abstract
12 A hybrid pulse interval modulation--code-division multiple- access (PIM-CDMA) is proposed for optical wireless communication systems. It offers higher transmission rate compared with the hybrid pulse position modulation (PPM)-- CDMA due to its non-fixed frame structure. Strict optical orthogonal code is used as a signature sequence located at the start each frame. Expressions for bit error rate are given for both PPM-CDMA and PIM-CDMA schemes, assuming that the dominant noise and interference are due to the self- interference and optical multiple access interference. The numerical results are compared with both PPM-CDMA and OOK- CDMA, and it shows that the proposed scheme is a viable scheme for optical wireless communications.
Original language | English |
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Title of host publication | Optical Wireless Communications III |
Publisher | SPIE |
Pages | 153-161 |
Volume | 4214 |
ISBN (Print) | 9780819438799 |
DOIs | |
Publication status | Published - 6 Feb 2001 |