Construction of high-efficient optical CDMA computer networks: statistical design

Muckenheim, J.; Iversen, K.; Hampicke, D.

doi:10.1109/icc.1998.683033

Cited by 3 publications

(2 citation statements)

References 13 publications

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“…Mückenheim et al also show that the performance on the link layer can be improved when a combination of FEC and retransmissions is used [7]. Moreover, the performance of FEC can be further improved with soft detection as demonstrated for an OCDMA system with turbo codes in [8].…”

Section: Introductionmentioning

confidence: 92%

Evaluation of soft decoding for optical frequency-hopping channels with beat noise

Lundqvist

Karlsson

GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489)

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Section: Introductionmentioning

confidence: 92%

Evaluation of soft decoding for optical frequency-hopping channels with beat noise

Lundqvist

Karlsson

GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489)

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“…Muckenheim et al [16], [17] studied the effect of bit error probability on the packet error probability and suggested the use of block codes to reduce packet errors. They also described a random delay protocol to reduce the errors incurred during periods of high activity.…”

Section: Related Workmentioning

confidence: 99%

The need for media access control in optical CDMA networks

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Abstract-Optical CDMA Local Area Networks allow shared access to a broadcast medium. Every node on the network is assigned an Optical Orthogonal Codeword (OOC) to transmit or receive on. OOCs are designed to be pseudo-orthogonal, i.e., the correlation (and therefore the interference) between pairs of codewords is constrained. This paper demonstrates that the use of optical CDMA does not preclude the need for a media access control (MAC) layer protocol to resolve contention for the shared media.OOCs have low spectral efficiency. As more codewords are transmitted simultaneously, the interference between codewords increases and the network throughput falls. This paper analyzes a network architecture where there is virtually no MAC layer, except for choice of the codeset, and shows that its throughput degrades and collapses under moderate to heavy load. We propose an alternate architecture called Interference Avoidance where nodes on the network use media access mechanisms to avoid causing interference on the line, thereby improving network throughput. Interference avoidance is analyzed and it is shown that it can provide up to 30% improvement in throughput with low delays and no throughput collapse. We validate our analysis through simulation with realistic network traffic traces.

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On error-correction coding for CDMA PON

Lundqvist

Karlsson

2005

J. Lightwave Technol.

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Construction of high-efficient optical CDMA computer networks: statistical design

Cited by 3 publications

References 13 publications

Evaluation of soft decoding for optical frequency-hopping channels with beat noise

Evaluation of soft decoding for optical frequency-hopping channels with beat noise

The need for media access control in optical CDMA networks

On error-correction coding for CDMA PON

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