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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Qu Zhang Goeckel, D.L. |
| Copyright Year | 2007 |
| Description | Author affiliation: Univ. of Massachusetts, Amherst (Qu Zhang; Goeckel, D.L.) |
| Abstract | The design of ultra-wideband (UWB) communication systems has proven to be challenging. Coherent systems require a rake receiver with many taps that is difficult to train, and transmitted-reference (TR) schemes require a wideband analog delay line whose implementation has proven extremely difficult. In response to this challenge, we have recently proposed the frequency-shifted reference (FSR-UWB) system, which leads to the replacement of the delay line in the receiver of the standard TR-UWB system with a mixer, and the resulting system is easily implemented. In this paper, the FSR-UWB idea is extended to provide multiple-access, and a performance analysis is presented. This analysis and the corresponding numerical results reveal that, due to the large bandwidth expansion of the UWB system, the FSR-UWB single-user receiver can still be successfully employed in lightly loaded systems; in other words, successful multiple- access can be achieved without the need for the wideband analog delay line of TR-UWB or the despreading circuitry generally associated with conventional multiple-access spread-spectrum systems. The result is an extremely simple architecture for wideband multiple-access communications in the wireless environment. |
| Starting Page | 1083 |
| Ending Page | 1088 |
| File Size | 237015 |
| Page Count | 6 |
| File Format | |
| ISBN | 1424403537 |
| DOI | 10.1109/ICC.2007.184 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2007-06-24 |
| Publisher Place | UK |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Frequency Ultra wideband technology Multipath channels Delay lines Fading Performance analysis Bandwidth Circuits Spread spectrum communication Wireless communication |
| Content Type | Text |
| Resource Type | Article |
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