| Presentation | 2010-04-27 A Study on the User Allocation in IFDMA Yuichi KAZAMA, Koichi ADACHI, Tomoaki OHTSUKI, Masao NAKAGAWA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Single-carrier frequency division multiple access (SC-FDMA) will be adopted in the uplink of the future wireless communication system. Interleaved frequency division multiple access (IFDMA), which is a special case of SC-FDMA, can obtain frequency diversity gain by allocating the frequency component of the transmitted signal to the wide spread frequency spectrum that are equi-distantly spaced. However, inter-chip interference (ICI) incurred by multipaths environment degrades the transmission performance of IFDMA. In the multi-user environment, where a number of users communicate at the same time, multi-user diversity can be obtained by allocating user's spectrum according to each user's channel gain. However, it has not been clarified that the impact of user allocation on the performance of IFDMA by taking into account of user fairness, the frequency diversity, and the multi-user diversity and ICI. We have previously evaluated the average bit error rate (BER) performance of IFDMA in the multi-user environment by taking into account of frequency diversity, multi-user diversity and ICI when Q and L are changed and then average BER performance of IFDMA is compared to that of OFDM. In this report, we focus on the multi-user diversity gain that is greatly affected by the user allocation method. The impact of user allocation on the channel capacity is evaluated by computer simulation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | IFDMA / Frequency diversity / Multi-user diversity / ICI / User allocation |
| Paper # | RCS2010-16 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2010/4/19(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Radio Communication Systems (RCS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on the User Allocation in IFDMA |
| Sub Title (in English) | |
| Keyword(1) | IFDMA |
| Keyword(2) | Frequency diversity |
| Keyword(3) | Multi-user diversity |
| Keyword(4) | ICI |
| Keyword(5) | User allocation |
| 1st Author's Name | Yuichi KAZAMA |
| 1st Author's Affiliation | () |
| 2nd Author's Name | Koichi ADACHI |
| 2nd Author's Affiliation | |
| 3rd Author's Name | Tomoaki OHTSUKI |
| 3rd Author's Affiliation | |
| 4th Author's Name | Masao NAKAGAWA |
| 4th Author's Affiliation | |
| Date | 2010-04-27 |
| Paper # | RCS2010-16 |
| Volume (vol) | vol.110 |
| Number (no) | 19 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |