| Presentation | 2004/7/16 Impact of Chip Duty and Pulse Shape on Bit Error Probabilities for Ultra Wideband DS-CDMA Mohammad Azizur RAHMAN, Shigenobu SASAKI, Jie ZHOU, Hisakazu KIKUCHI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, we derive the bit error probabilities (BEP) for ultra wideband (UWB) direct sequence code division multiple access (DS-CDMA) communications using random sequences with arbitrary chip duty and pulse shape. In other words, we investigate the impact of chip duty and pulse shape on error probabilities for UWB DS-CDMA. Both synchronous and asynchronous users and carrier-less and carrier-based communications are considered. Additive white Gaussian noise (AWGN) is neglected. The decision statistics are developed. Then BEP equations are presented under Gaussian and simplified improved Gaussian approximations of the multiple access interference (MAI). Results obtained show that for certain chip length, pulse shape and BEP, the number of simultaneous users can be increased considerably in asynchronous system, if the chip duty is lowered. Again, the use of pulse shape having better autocorrelation property also helps to facilitate larger number of simultaneous users. A carrier-based system is found to perform better than a similar carrier-less system. Finally, simulation results are presented to validate theoretical derivations. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Ultra wideband / DS-UWB / CDMA / error probability / chip duty factor |
| Paper # | SIP2004-45,WBS2004-26 |
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| Conference Information | |
| Committee | SIP |
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| Conference Date | 2004/7/16(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Signal Processing (SIP) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Impact of Chip Duty and Pulse Shape on Bit Error Probabilities for Ultra Wideband DS-CDMA |
| Sub Title (in English) | |
| Keyword(1) | Ultra wideband |
| Keyword(2) | DS-UWB |
| Keyword(3) | CDMA |
| Keyword(4) | error probability |
| Keyword(5) | chip duty factor |
| 1st Author's Name | Mohammad Azizur RAHMAN |
| 1st Author's Affiliation | Department of Electrical and Electronic Engineering, Niigata University() |
| 2nd Author's Name | Shigenobu SASAKI |
| 2nd Author's Affiliation | Department of Electrical and Electronic Engineering, Niigata University |
| 3rd Author's Name | Jie ZHOU |
| 3rd Author's Affiliation | Department of Electrical and Electronic Engineering, Niigata University |
| 4th Author's Name | Hisakazu KIKUCHI |
| 4th Author's Affiliation | Department of Electrical and Electronic Engineering, Niigata University |
| Date | 2004/7/16 |
| Paper # | SIP2004-45,WBS2004-26 |
| Volume (vol) | vol.104 |
| Number (no) | 215 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |