| Presentation | 2001/10/13 Performance of Forward Link Broadband OFCDM Packet Wireless Access using MMSE Combining Scheme based on SIR Estimation Noriyuki Maeda, Hiroyuki Atarashi, Sadayuki Abeta, Mamoru Sawahashi, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper elucidates the throughput performance, i.e., the number of simultaneously multiplexed codechannels of OFCDM(Orthogonal Frequency and Code Division Multiplexing), when employing a MMSE(Minimum Mean Square Error) combining scheme based on SIR estimation in a broadband channel to achieve maximum throughput above 100 Mbps. In the proposed MMSE combining scheme, the combining weights of each sub-carrier are derived from the channel gain, noise power, and number of multiplexed codes, which are estimated using the time-multiplexed common pilot channel and the coded data channel. Simulation results results elucidate that the required average received E_b/N_0 for the average packet error rate(PER)=10^<-2> can be improved by 0.6 and 1.2 dB using MMSE combining instead of a conventional equal gain combining(EGC) in a 24-Path Rayleigh fading channel(exponentially distributed path model, maximum delay time is approximately 1μsec) in a single cell environment, when the number of multiplexed codes=8 and 32, respectively, with the spreading factor of SF=32. Furthermore, when the average received E_b/N_0=10 dB, the number of multiplexed codes for the average PER=10^<-2> in the MMSE combining is increased by approximately 1.3 fold that of the conventional EGC. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | broadband packet wireless access / forward link / OFCDM / MMSE combining |
| Paper # | A・P2001-127,RCS2001-166 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2001/10/13(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 of Forward Link Broadband OFCDM Packet Wireless Access using MMSE Combining Scheme based on SIR Estimation |
| Sub Title (in English) | |
| Keyword(1) | broadband packet wireless access |
| Keyword(2) | forward link |
| Keyword(3) | OFCDM |
| Keyword(4) | MMSE combining |
| 1st Author's Name | Noriyuki Maeda |
| 1st Author's Affiliation | Wireless Laboratories, NTTDoCoMo, Inc.() |
| 2nd Author's Name | Hiroyuki Atarashi |
| 2nd Author's Affiliation | Wireless Laboratories, NTTDoCoMo, Inc. |
| 3rd Author's Name | Sadayuki Abeta |
| 3rd Author's Affiliation | Wireless Laboratories, NTTDoCoMo, Inc. |
| 4th Author's Name | Mamoru Sawahashi |
| 4th Author's Affiliation | Wireless Laboratories, NTTDoCoMo, Inc. |
| Date | 2001/10/13 |
| Paper # | A・P2001-127,RCS2001-166 |
| Volume (vol) | vol.101 |
| Number (no) | 371 |
| Page | pp.pp.- |
| #Pages | 7 |
| Date of Issue | |