| Bibliographic Citation | |
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| Title | Multiple Access in Ultra-Wideband Communications Using Multiple Pulses |
| Creator/Author | Nekoogar, F ; Dowla, F |
| Publication Date | 2003 Apr 11 |
| OSTI Identifier | OSTI ID: 15005137 |
| Report Number(s) | UCRL-JC-152106 |
| DOE Contract Number | W-7405-ENG-48 |
| Other Number(s) | TRN: US200414%%616 |
| Resource Type | Conference |
| Resource Relation | Conference: Wireless Data Communications Onboard Spacecraft-Technology and Applications Workshop, Noordwijk (NL), 04/14/2003--04/16/2003; Other Information: PBD: 11 Apr 2003 |
| Research Org | Lawrence Livermore National Lab., CA (US) |
| Sponsoring Org | US Department of Energy (US) |
| Subject | 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; 42 ENGINEERING; ADDITIVES; AMPLITUDES; COMMUNICATIONS; FLOORS; MODULATION; PERFORMANCE; SHAPE |
| Description/Abstract | Multiple access (MA) in UWB communication is an area of active research. To date several time-division or code-division pulse amplitude modulation (PAM) or pulse position modulation (PPM) schemes have been proposed to separate multiple users in UWB communications. Conventionally, all users employ the same pulse shape and modulate the transmit pulse based on changing amplitude or position. One concern with using the same pulse for all channels is that the multiple access interference (MAI) increases as the number of users increase. This is due to increased cross-correlation between similar pulses of the different channels, raising thus the noise floor in such systems. In this paper we introduce and study the performance of a new MA scheme in the context of multiple orthogonal transmitted-reference (T-R) short duration (nsec) chirp pulses in the presence of multipath and additive white Gaussian noise (AWGN). |
| Country of Publication | United States |
| Language | English |
| Format | Medium: ED; Size: PDF-FILE: 9 ; SIZE: 0.3 MBYTES pages |
| System Entry Date | 2008 Feb 12 |
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