| Presentation | 2002/8/23 Performance Comparions between OFCDM and OFDM in a Forward Link Broadband Channel Noriyuki Maeda, Hiroyuki Atarashi, Yoshihisa Kishiyama, Mamoru Sawahashi, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper compares the forward link radio link capacity between Orthogonal Frequency and Code Division Multiplexing (OFCDM) with one-cell frequency reuse and Orthogonal Frequency Division Multiplexing (OFDM) with conventional three-cell frequency reuse or with one-cell frequency reuse utilizing symbol repetition, considering the effect of sectorization and the adaptive modulation and channel coding (AMC) scheme in a multi-cell environment under a broadband multipath fading. Simulation results demonstrate that, although the achievable radio link capacity in VSF-OFCDM is approximately 1.4 fold greater compared to that in OFDM with three-cell frequency reuse, almost identical radio link capacity under full channel-load conditions is realized in OFCDM and OFDM with one-cell frequency reuse applying elaborate symbol repetition transmission to suppress other-cell interference. Meanwhile, for achieving a lower data rate channel than the peak rate, higher-quality transmission is possible in OFCDM employing two-dimensional spreading compared to OFDM, by utilizing the frequency diversity effect in frequency domain spreading. Consequently, we conclude that OFCDM is superior to OFDM in broadband wireless access, since the former provides higher-quality transmission and more flexible accommodation of the lower data rate channels, along with the flexibility in designing essential channels such as the control and pilot channels. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | broadband wireless access / OFCDM / OFDM / link capacity |
| Paper # | RCS2002-162 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2002/8/23(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 Comparions between OFCDM and OFDM in a Forward Link Broadband Channel |
| Sub Title (in English) | |
| Keyword(1) | broadband wireless access |
| Keyword(2) | OFCDM |
| Keyword(3) | OFDM |
| Keyword(4) | link capacity |
| 1st Author's Name | Noriyuki Maeda |
| 1st Author's Affiliation | Wireless Laboratories, NTT DoCoMo, Inc.() |
| 2nd Author's Name | Hiroyuki Atarashi |
| 2nd Author's Affiliation | Wireless Laboratories, NTT DoCoMo, Inc. |
| 3rd Author's Name | Yoshihisa Kishiyama |
| 3rd Author's Affiliation | Wireless Laboratories, NTT DoCoMo, Inc. |
| 4th Author's Name | Mamoru Sawahashi |
| 4th Author's Affiliation | Wireless Laboratories, NTT DoCoMo, Inc. |
| Date | 2002/8/23 |
| Paper # | RCS2002-162 |
| Volume (vol) | vol.102 |
| Number (no) | 282 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |