Zhang, HaoGulliver, Thomas Aaron2014-08-062014-08-0620082008-02-10Zhang, H., & Gulliver, T. A. (2008). Capacity of Time-Hopping PPM and PAM UWB Multiple Access Communications over Indoor Fading Channels. EURASIP Journal on Wireless Communications and Networking, 2008(1). https://doi.org/10.1155/2008/273018http://jwcn.eurasipjournals.com/content/2008/1/273018http://dx.doi.org/10.1155/2008/273018http://hdl.handle.net/1828/5513BioMed CentralThe 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.enArticleDepartment of Electrical and Computer Engineering