| Presentation | 2010-12-17 Investigations on Channel-Dependent Adaptive Spreading Code Selection in Downlink MC-CDMA with MMSE-SIC Receiver Akira WAKAMIYA, Shota YOSHIMURA, Kenichi HIGUCHI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper investigates the received signal-to-noise and interference power ratio (SINR) of the proposed channel-dependent adaptive spreading code matrix selection in downlink multicarrier code division multiple access (MC-CDMA) assuming the minimum mean squared error-successive interference canceller (MMSE-SIC). Firstly, we show that the SINR after the MMSE-SIC is represented as a weighted average of the instantaneous SNR of respective subcarriers to which the spread symbols are mapped, where the weighting factor is determined by the respective chip power of the spreading sequence. From this, we propose a channel-dependent adaptive spreading code matrix selection and adaptive ordering of the SIC in which the minimum SINR among code multiplexed users are maximized. The simulation results elucidate that the proposed method can increase the minimum SINR at the outage probability of 10^<-3> by approximately 1 dB compared to the conventional MC-CDMA and OFDMA with adaptive frequency allocation based on the channel conditions of respective users. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | MC-CDMA / Spreading code / Adaptive code selection / MMSE-SIC |
| Paper # | RCS2010-191 |
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| Committee | RCS |
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| Conference Date | 2010/12/9(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| 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) | Investigations on Channel-Dependent Adaptive Spreading Code Selection in Downlink MC-CDMA with MMSE-SIC Receiver |
| Sub Title (in English) | |
| Keyword(1) | MC-CDMA |
| Keyword(2) | Spreading code |
| Keyword(3) | Adaptive code selection |
| Keyword(4) | MMSE-SIC |
| 1st Author's Name | Akira WAKAMIYA |
| 1st Author's Affiliation | Department of Electrical Engineering, Graduate School of Science and Technology Tokyo University of Science() |
| 2nd Author's Name | Shota YOSHIMURA |
| 2nd Author's Affiliation | Department of Electrical Engineering, Graduate School of Science and Technology Tokyo University of Science |
| 3rd Author's Name | Kenichi HIGUCHI |
| 3rd Author's Affiliation | Department of Electrical Engineering, Graduate School of Science and Technology Tokyo University of Science |
| Date | 2010-12-17 |
| Paper # | RCS2010-191 |
| Volume (vol) | vol.110 |
| Number (no) | 340 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |