| Presentation | 2003/5/15 A Study on Diversity for Ultra Wideband Impulse Radio (UWB-IR) Takahiro EZAKI, Tomoaki OHTSUKI, |
|---|---|
| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Ultra WideBand-Implse Radio (UWB-IR) system is a technology of transmitting data by sending ultra short pulses. The UWB-IR system can achieve a time diversity gain by transmitting some pulses per information symbol. In [4], the Space Time (ST)-UWB-IR system was proposed to achieve a space-time diversity gain by transmitting space-time block coded symbols with some antennas. Note that in [4] only the ST-UWB-IR system with two transmit antennas has been evaluated on the block fading channels with the fading block size q=2. In the UWB-IR system, pulses are transmitted sequentially. If the pulses for an information symbol are transmitted not sequentially but discontinuously on the block fading channels, we can expect the larger diversity gain. In this report, we consider the UWB-IR system where pulses for an information symbol are transmitted not sequentially but discontinuously through the time interleaver. We refer to the sytem as Time Interleave (TI)-UWB-IR sytem. We compare the diversity gains of the UWB-IR systems on the block fading channel with the block fading size q. Simulation results show that when the number of transmit antennas is larger than or equal to the fading block size q, all the systems can achieve the same diversity gain. When number of transmit antennas is smaller then than the fading block size q, the TI-UWB-IR system can achieve the largest diversity gain, and the ST-UWB-IR system and the UWB-IR system follow in order. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | UWB-IR / TI-UWB-IR / ST-UWB-IR / Diversity gain |
| Paper # | WBS2003-5,MW2003-17 |
| Date of Issue |
| Conference Information | |
| Committee | MW |
|---|---|
| Conference Date | 2003/5/15(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Microwaves (MW) |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on Diversity for Ultra Wideband Impulse Radio (UWB-IR) |
| Sub Title (in English) | |
| Keyword(1) | UWB-IR |
| Keyword(2) | TI-UWB-IR |
| Keyword(3) | ST-UWB-IR |
| Keyword(4) | Diversity gain |
| 1st Author's Name | Takahiro EZAKI |
| 1st Author's Affiliation | Graduate School of Science and Technology, Tokyo University of Science() |
| 2nd Author's Name | Tomoaki OHTSUKI |
| 2nd Author's Affiliation | Faculty of Science and Technology, Tokyo University of Science |
| Date | 2003/5/15 |
| Paper # | WBS2003-5,MW2003-17 |
| Volume (vol) | vol.103 |
| Number (no) | 75 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |