| Presentation | 2007-10-19 Downlink capacity of multi-carrier multiple access with variable spreading factor and subcarrier allocation Hisashi MITSUI, Kazuaki TAKEDA, Fumiyuki ADACHI, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Multi-carrier code division multiple access (MC-CDMA) is a promising wireless access technique for next generation cellular communication systems that provide high speed data services. In MC-CDMA, multi-access is realized by using orthogonal spreading sequences. However, the transmission performance deteriorates due to the inter-code interference (ICI). ICI can be avoided by assigning a different set of subcarriers to a different user. Furthermore, the link capacity can be improved by adaptively allocating the subcarriers with a good channel condition to each user. In this paper, we propose the multi-carrier multi-access method which changes a spreading factor by according to the number of the users so as to use all subcarriers, and adaptive subcarrier allocation according to the ascending order of the signal-to-noise power ratio (SNR). Its downlink capacity is evaluated by computer simulation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | multi-carrier multi access / variable spreading factor / subcarrier allocation |
| Paper # | RCS2007-92 |
| Date of Issue |
| Conference Information | |
| Committee | RCS |
|---|---|
| Conference Date | 2007/10/11(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 | Radio Communication Systems (RCS) |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Downlink capacity of multi-carrier multiple access with variable spreading factor and subcarrier allocation |
| Sub Title (in English) | |
| Keyword(1) | multi-carrier multi access |
| Keyword(2) | variable spreading factor |
| Keyword(3) | subcarrier allocation |
| 1st Author's Name | Hisashi MITSUI |
| 1st Author's Affiliation | Dept. of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University() |
| 2nd Author's Name | Kazuaki TAKEDA |
| 2nd Author's Affiliation | Dept. of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University |
| 3rd Author's Name | Fumiyuki ADACHI |
| 3rd Author's Affiliation | Dept. of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University |
| Date | 2007-10-19 |
| Paper # | RCS2007-92 |
| Volume (vol) | vol.107 |
| Number (no) | 262 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |