| Presentation | 2003/1/9 Decision-Directed Joint ESPAR Antenna Beamforming and Rate Adaptation in an OFDM-Based Multi-Rate System Thomas HUNZIKER, Masaya HASHIGURCHI, Takashi OHIRA, |
|---|---|
| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The electronically steerable parasitic array radiator (ESPAR) single-port antenna offers beamforming capabilities at low complexity and power consumption. The beam pattern is optimized by adjusting the reactances of varactors beneath the passive ESPAR antenna elements, employing e.g. a steepest gradient algorithm. In this paper we propose to accomplish the beamforming in a decision-directed fashion. This evades the need for long training sequences and allows to step-wise increase the modulation level and/or code rate as the SINR grows. The performance of the decision-directed joint beamforming and rate adaptation scheme is investigated for an IEEE802.1 la multi-rate OEDM physical layer in computer simulations. It turns out that in some transmission scenarios the average bandwidth efficiency can be increased by about a factor 2 compared to a system with a beamforming based on training sequences. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | ESPAR antenna / Decision-directed parameter cstimation / Beamforming / Rate adaptation / Stecpest gradient merhod / OFDM |
| Paper # | DSP2002-163,SAT2002-113,RCS2002-232 |
| Date of Issue |
| Conference Information | |
| Committee | SAT |
|---|---|
| Conference Date | 2003/1/9(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 | Satellite Telecommunications (SAT) |
|---|---|
| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Decision-Directed Joint ESPAR Antenna Beamforming and Rate Adaptation in an OFDM-Based Multi-Rate System |
| Sub Title (in English) | |
| Keyword(1) | ESPAR antenna |
| Keyword(2) | Decision-directed parameter cstimation |
| Keyword(3) | Beamforming |
| Keyword(4) | Rate adaptation |
| Keyword(5) | Stecpest gradient merhod |
| Keyword(6) | OFDM |
| 1st Author's Name | Thomas HUNZIKER |
| 1st Author's Affiliation | ATRAdaptive Communications Research Laboratories() |
| 2nd Author's Name | Masaya HASHIGURCHI |
| 2nd Author's Affiliation | ATRAdaptive Communications Research Laboratories |
| 3rd Author's Name | Takashi OHIRA |
| 3rd Author's Affiliation | ATRAdaptive Communications Research Laboratories |
| Date | 2003/1/9 |
| Paper # | DSP2002-163,SAT2002-113,RCS2002-232 |
| Volume (vol) | vol.102 |
| Number (no) | 547 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |