| Presentation | 2005-07-29 A Baseband Simulator for MIMO-OFDM Transmission by Using FPGA Satoshi SUYAMA, Hiroshi SUZUKI, Kazuhiko FUKAWA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This report describes a configuration and performances of a real-time baseband simulator that aims to efficiently verify signal processing modules for the software defined radio and that can realize 2×2 MIMO-OFDM transmission following the wireless LAN (WLAN) standards. The simulator for MIMO-OFDM implements some signal processing modules into a board that consists of six FPGAs with high capacity, ADC, and DAC with 14-bit and sampling rate more than 100MHz. The simulator can measure the transmission performances in real time, because the signal processing modules include a fading simulator and a noise generator in addition to both transmitter and receiver modules. It is demonstrated that the measured performances are the same as results of computer simulation with floating-point processing. In addition, the signal processing modules can work up to 6 times bandwidth as wide as WLAN, and can achieve the bit-rate of 144Mbps with QPSK and the coding rate of 1/2. Since the simulator can output time-domain signals and spectrums as internal signals from DAC, this report shows the observed data, and clarifies that the simulator is useful as a visual debug tool. Furthermore, the subcarrier phase hopping scheme for the space division multiplexing is implemented as a technique which can improve the transmission performance of MIMO-OFDM, and it is shown that the scheme can sufficiently improve the effect of the frequency diversity due to a channel code without requiring any large-scale circuit. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Mobile communication / MIMO-OFDM / FPGA / baseband simulator / subcarrier phase hopping |
| Paper # | SR2005-30 |
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| Conference Information | |
| Committee | SR |
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| Conference Date | 2005/7/21(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Software Radio(SR) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Baseband Simulator for MIMO-OFDM Transmission by Using FPGA |
| Sub Title (in English) | |
| Keyword(1) | Mobile communication |
| Keyword(2) | MIMO-OFDM |
| Keyword(3) | FPGA |
| Keyword(4) | baseband simulator |
| Keyword(5) | subcarrier phase hopping |
| 1st Author's Name | Satoshi SUYAMA |
| 1st Author's Affiliation | Tokyo Institute of Technology() |
| 2nd Author's Name | Hiroshi SUZUKI |
| 2nd Author's Affiliation | Tokyo Institute of Technology |
| 3rd Author's Name | Kazuhiko FUKAWA |
| 3rd Author's Affiliation | Tokyo Institute of Technology |
| Date | 2005-07-29 |
| Paper # | SR2005-30 |
| Volume (vol) | vol.105 |
| Number (no) | 217 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |