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Conference proceeding
On merits of spatial coding in multilevel optical wireless links
GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489), Vol.7, pp.4006-4010 vol.7
GLOBECOM '03 (San Francisco, CA, USA, 12/01/2003–12/05/2003)
2003
Web of Science ID: WOS:000189451400774
Abstract
Spatial confinement of the paths traveled by infrared signals enables reuse of bandwidth and resources in adjacent indoor environments. This property can also result in undesirable shadowing that occurs whenever an obstacle blocks signal paths between transceivers. Shadowing compromises link reliability by increasing the error rate, and can result in service interruption. We propose spatial coding to improve link performance and alleviate the shadowing effect in multi spot diffusing, a multi-input, multi-output architecture. Spatial coding performance is compared to receiver multi-level combining. Our results show that when a channel is shadowed, 4-level combining at the receiver fails to maintain a reliable link irrespective of transmitted power. Using spatial coding over 6 channels, a reliable link is possible in the presence of a shadowed channel with an optical power penalty of 4.5 dB.
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Details
- Title
- On merits of spatial coding in multilevel optical wireless links
- Publication Details
- GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489), Vol.7, pp.4006-4010 vol.7
- Resource Type
- Conference proceeding
- Conference
- GLOBECOM '03 (San Francisco, CA, USA, 12/01/2003–12/05/2003)
- Publisher
- IEEE
- Copyright
- © 2003, IEEE
- Identifiers
- WOS:000189451400774; 99380503295906600
- Academic Unit
- Dr. Muhammad Harunur Rashid Department of Electrical and Computer Engineering; Hal Marcus College of Science and Engineering
- Language
- English