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A Projected Parallel Interference Cancellation for Asynchronous Upstream OCDMA-PON
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DOI：10.1109/LCOMM.2012.091712.120962.png)
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Abstract
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OCDMA is a promising candidate for next generation passive optical networks (NG-PON). OCDMA-PON can potentially provide all customers with a Gb/s-class BW upstream with inherent flexibility. Unfortunately OCDMA suffers from multiple access interference (MAI) and various detection noises. To mitigate MAI, we propose a novel parallel interference cancellation technique for incoherent DS-OCDMA that better exploits the non-negativity of the solution. The proposed PIC scheme incorporates this additional information into its structure. The proposed PIC detector is shown to outperform the conventional correlator detector, the decorrelator detector, the linear parallel interference Cancellation (LPIC) detector and even the linear minimum mean square error (LMMSE) detector.
Keywords:
Multiuser detector (MUD)
parallel interference cancellation (PIC)
OCDMA-PON
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