| Presentation | 2003/7/10 Experiments on IP Packet Transmission Performance Employing Adaptive Modulation and Channel Coding in Forward Link for VSF-OFCDM Broadband Wireless Access Atsushi Harada, Tetsuhito Gima, 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 presents experimental results on IP packet throughput and delay performance over Radio Access Network (RAN) employing Adaptive Modulation and channel Coding (AMC) and hybrid ARQ with packet combining in the forward link using 100-MHz bandwidth for VSF-OFCDM (Variable Spreading Factor-Orthogonal Frequency and Code Division Multiplexing) broadband wireless access. Experimental results when AMC and Incremental redundancy were employed, the time delay was decreased as the number of paths was increased since the fluctuations of the received signal level becomes smaller and it was increased according to the increase of fading maximum Doppler frequency f_D due to the degradation of tracking ability of AMC. Furthermore, it was elucidated that the maximum total time delay over RAN at the cumulative distribution of 99 (50)%, including the delay caused by buffering in MAC (Medium Access Control) layer hybrid ARQ and reordering control, became approximately 25(10) msec in the region of average received E_s/N_0 (signal energy per symbol-to-background noise power spectrum noise density ratio) more than approximately OdB assuming the user throughput of 20 Mbps and channel model as 6-path channels with f_D=20Hz. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | broadband wireless access / VSF-OFCDM / IP packet / AMC / ARQ |
| Paper # | NS2003-52,RCS2003-75 |
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| Conference Information | |
| Committee | NS |
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| Conference Date | 2003/7/10(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Network Systems(NS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Experiments on IP Packet Transmission Performance Employing Adaptive Modulation and Channel Coding in Forward Link for VSF-OFCDM Broadband Wireless Access |
| Sub Title (in English) | |
| Keyword(1) | broadband wireless access |
| Keyword(2) | VSF-OFCDM |
| Keyword(3) | IP packet |
| Keyword(4) | AMC |
| Keyword(5) | ARQ |
| 1st Author's Name | Atsushi Harada |
| 1st Author's Affiliation | Wireless Laboratories, NTT DoCoMo, Inc.() |
| 2nd Author's Name | Tetsuhito Gima |
| 2nd Author's Affiliation | Wireless Laboratories, NTT DoCoMo, Inc. |
| 3rd Author's Name | Sadayuki Abeta |
| 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 | 2003/7/10 |
| Paper # | NS2003-52,RCS2003-75 |
| Volume (vol) | vol.103 |
| Number (no) | 201 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |