Free space optics supporting multi user communications for wireless mesh networks

Belal Y. Hamzeh; Mohsen Kavehrad

doi:10.1117/12.570667

Free space optics supporting multi user communications for wireless mesh networks

Belal Y. Hamzeh, Mohsen Kavehrad

Materials Research Institute (MRI)

Research output: Contribution to journal › Conference article › peer-review

5 Scopus citations

Abstract

For free space optics to support multi user communications, multi-access schemes need to be incorporated. Conventional asynchronous optical code division multiple access (OCDMA) using optical orthogonal codes (OOCs) cannot deliver the required performance due to code interference, which sets a lower bound on the achievable bit error rate. Thus we introduce the use of complementary Walsh Hadamard codes as a promising solution to support synchronous OCDMA, capable of achieving required performance due to inherent interference cancellation, in addition to supporting a higher number of users while maintaining short code lengths, and alleviating some of the stringent requirements on the receiver hardware.

Original language	English (US)
Article number	19
Pages (from-to)	217-226
Number of pages	10
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	5598
DOIs	https://doi.org/10.1117/12.570667
State	Published - Dec 1 2004
Event	Performance, Quality of Service, and Control of Next-Generation Communications Networks II - Philadelphia, PA, United States Duration: Oct 26 2004 → Oct 27 2004

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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10.1117/12.570667

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N2 - For free space optics to support multi user communications, multi-access schemes need to be incorporated. Conventional asynchronous optical code division multiple access (OCDMA) using optical orthogonal codes (OOCs) cannot deliver the required performance due to code interference, which sets a lower bound on the achievable bit error rate. Thus we introduce the use of complementary Walsh Hadamard codes as a promising solution to support synchronous OCDMA, capable of achieving required performance due to inherent interference cancellation, in addition to supporting a higher number of users while maintaining short code lengths, and alleviating some of the stringent requirements on the receiver hardware.

AB - For free space optics to support multi user communications, multi-access schemes need to be incorporated. Conventional asynchronous optical code division multiple access (OCDMA) using optical orthogonal codes (OOCs) cannot deliver the required performance due to code interference, which sets a lower bound on the achievable bit error rate. Thus we introduce the use of complementary Walsh Hadamard codes as a promising solution to support synchronous OCDMA, capable of achieving required performance due to inherent interference cancellation, in addition to supporting a higher number of users while maintaining short code lengths, and alleviating some of the stringent requirements on the receiver hardware.

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ER -

Free space optics supporting multi user communications for wireless mesh networks

Abstract

All Science Journal Classification (ASJC) codes

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