FOCS '02 Proceedings of the 43rd Symposium on Foundations of Computer Science
Information Theory, Inference & Learning Algorithms
Information Theory, Inference & Learning Algorithms
Error Control Coding, Second Edition
Error Control Coding, Second Edition
Transceiver design concept for cellular and multispot diffusing regimes of transmission
EURASIP Journal on Wireless Communications and Networking - Special issue on optical wireless communications
Wireless Optical Communication Systems
Wireless Optical Communication Systems
Electronic tracking for wireless infrared communications
IEEE Transactions on Wireless Communications
Fading channels: information-theoretic and communications aspects
IEEE Transactions on Information Theory
Imaging diversity receivers for high-speed infrared wireless communication
IEEE Communications Magazine
The infrared physical layer of the IEEE 802.11 standard for wireless local area networks
IEEE Communications Magazine
High-speed integrated transceivers for optical wireless
IEEE Communications Magazine
A digital fountain approach to asynchronous reliable multicast
IEEE Journal on Selected Areas in Communications
Improving RCPC Codes in Rate-Adaptive Optical Wireless Communications Systems
Wireless Personal Communications: An International Journal
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This paper introduces the dynamic spot diffusing (DSD) configuration for high-speed indoor wireless optical communications. In this configuration, data are modulated onto a moving spot which is translated over the ceiling. A multi-element imaging receiver is pointed upward and acquires data whenever the transmitter spot is in its field-of-view (FOV). We develop expressions for the channel capacity of such DSD links and discuss design techniques to maximize these information theoretic bounds. Rather than tracking the transmitter spot, we apply rateless erasure correcting codes to approach the capacity of the simulated DSD links. This technique is demonstrated to have better flexibility, greater multipath immunity, higher data rates and simpler transmitters than previously defined multi-spot and diffuse architectures. In a 6 × 6 × 3 m room, simulated data rates vary between 7 Mbps to 25 Mbps at different positions using a single 100 Mbps transmitter and between 35 Mbps to 84 Mbps using 6 spots and the designed erasure correction code. Using power efficient modulation and power gain due to the spot motion of the DSD system, proportionally higher rates are estimated when faster 1 Gbps and 10 Gbps transmitters are employed.