| Presentation | 2009-11-27 Performance Comparison between Cyclic Shift and Block Spread CDMA with Frequency Hopping Using Maximum Likelihood Detection with Channel Coding Information Ryota Takahashi, Teruo Kawamura, Mamoru Sawahashi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper presents block error rate (BLER) performance comparison between cyclic shift and block spread CDMA with frequency hopping using joint maximum likelihood detection (MLD) exploiting channel coding information for physical uplink control channel (PUCCH) in Long-Term Evolution (LTE). Simulation results show that the averaging of correlations between 2 frequency-hopped slots and those between 2 receiver antennas in the squared form is more appropriate that coherent averaging using estimated channel response. Hence, we show joint MLD without channel estimation is effective in reducing the increase in the required received SNR (Signal-to-Noise power Ratio) due to inter-code interference in long delay spread conditions. We also elucidate although block spread CDMA is superior to cyclic shift CDMA due to lower required received SNR in small delay spread environments, cyclic shift CDMA using joint MLD is more appropriate than block spread CDMA for supporting small-to-large delay spread environments. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | CDMA / Cyclic shift / Block spread / MLD / LTE |
| Paper # | RCS2009-152 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2009/11/19(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) | Performance Comparison between Cyclic Shift and Block Spread CDMA with Frequency Hopping Using Maximum Likelihood Detection with Channel Coding Information |
| Sub Title (in English) | |
| Keyword(1) | CDMA |
| Keyword(2) | Cyclic shift |
| Keyword(3) | Block spread |
| Keyword(4) | MLD |
| Keyword(5) | LTE |
| 1st Author's Name | Ryota Takahashi |
| 1st Author's Affiliation | Department of Information Network Engineering, Tokyo City University() |
| 2nd Author's Name | Teruo Kawamura |
| 2nd Author's Affiliation | Radio Access Network Development Department, NTT DOCOMO, INC. |
| 3rd Author's Name | Mamoru Sawahashi |
| 3rd Author's Affiliation | Department of Information Network Engineering, Tokyo City University |
| Date | 2009-11-27 |
| Paper # | RCS2009-152 |
| Volume (vol) | vol.109 |
| Number (no) | 305 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |