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Electrical code-division multiplexing for low-cost optical subscriber loops

: Iversen, K.; Muckenheim, J.; Hampicke, D.; Gessner, G.; Scheiner, J.


Vercelli, R. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.; Technologiestiftung Innovationszentrum, Berlin:
Broadband strategies and technologies for wide area and local access networks : 10-11 October 1996, Berlin, FRG
Bellingham/Wash.: SPIE, 1996 (SPIE Proceedings Series 2953)
ISBN: 0-8194-2357-2
Conference "Broadband Strategies and Technologies for Wide Area and Local Access Networks" <1996, Berlin>
Fraunhofer HHI ()
forward error correction; matched filters; multiplexing; optical fibre subscriber loops; telecommunication channels; electrical code-division multiplexing; low-cost optical subscriber loops; upstream channel; synchronous code-division multiplexing; block interleaving; fec; multi-user receiver; block interleaver; matched filter

In this paper a novel low-cost method for realization of the upstream channel in optical subscriber loops is investigated, based on synchronous code-division multiplexing (CDM) and block interleaving. To prove the performance of the proposed system concept the influence of different sequences and the combination with forward error correction (FEC) is examined. Moreover, the implementation of a multi-user receiver is suggested which combines block interleaver and matched filter.