Capacity of Time-Hopping PPM and PAM UWB Multiple Access Communications over Indoor Fading Channels
Capacity of Time-Hopping PPM and PAM UWB Multiple Access Communications over Indoor Fading Channels
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DOI：
10.1155/2008/273018
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发表时间：
2008
影响因子：
2.6
通讯作者：
Hao Zhang;T. Gulliver
中科院分区：
文献类型：
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作者：
Hao Zhang;T. Gulliver
The capacity of time-hopping pulse position modulation (PPM) and pulse amplitude modulation (PAM) for an ultra-wideband (UWB) communication system is investigated based on the multipath fading statistics of UWB indoor wireless channels. A frequency-selective fading channel is considered for both single-user and multiple-user UWB wireless systems. A Gaussian approximation based on the single-user results is used to derive the multiple access capacity. Capacity expressions are derived from a signal-to-noise-ratio (SNR) perspective for various fading environments. The capacity expressions are verified via Monte Carlo simulation.
