Capacity bounds for an ultra-wideband channel model
Author
Arıkan, Erdal
Date
2004-10Source Title
2004 IEEE Information Theory Workshop - Proceedings, ITW
Publisher
IEEE
Pages
176 - 181
Language
English
Type
Conference PaperItem Usage Stats
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Abstract
There is an ongoing effort by the IEEE 802.15.3a subcommittee to reach a UWB personal area network standard. We estimate the achievable rates for such networks using a channel model specified by the same group. The analysis of this channel model is of interest in light of recent information-theoretic work on multipath fading channels which show that in order to take full advantage of such channels' capacity the transmitted signals have to be "peaky" in a certain sense. The immense bandwidth of the UWB channel also suggests at first that peaky signals should be used. However, unlike the many other wireless systems where the transmitter energy is limited, in the UWB channel only the power spectral density of the transmitted signal is constrained. As a result, the signal power can grow in proportion to the utilized bandwidth and peaky signals are not needed. © 2004 IEEE.
Keywords
Approximation theoryBandwidth
Broadband networks
Channel capacity
Error analysis
Estimation
Fading (radio)
Linear systems
Mathematical models
Multipath propagation
Signal to noise ratio
Capacity bounds
Personal area network
Power spectral density
Ultra-wideband channel (UWB) model
Communication channels (information theory)