| Presentation | 2001/11/13 Investigation on Channel Coding for Broadband OFCDM Packet Wireless Access in Forward Link Considering QoS Requirements Atsushi Harada, 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 clarified the optimum channel-coding rate for two traffic class (i.E., real time traffic and non-real time traffic) according to the required QoS (delay) of broadband packet OFCDM( Orthogonal Frequency and Code Division Multiplexing) wireless access, based on the achievable throughput and residual packet error rare (PER). In concrete, the optimum coding rate employing turbo coding is derived assuming the maximum retransmission numbers in ARQ corresponding to the delay requirement each traffic class. Simulation results elucidate that for non-real time traffic, the optimum coding rate becomes R=2/3-4/5 based on the throughput in overall environments in a 24-path Rayleigh fading channel (exponentially distributed path model, maximum delay time is approximately 1.4μsec) in a single cell environment. Furthermore, it is also clarified that the lower coding rate such as R=1/3-1/2 is appropriate for real time traffic based on the residual PER because the allowable retransmission numbers are restricted. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | QoS control / broadband packet wireless access / forward link / OFCDM / hybrid ARQ |
| Paper # | RCS 2001-181 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2001/11/13(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Vice Chair | |
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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) | Investigation on Channel Coding for Broadband OFCDM Packet Wireless Access in Forward Link Considering QoS Requirements |
| Sub Title (in English) | |
| Keyword(1) | QoS control |
| Keyword(2) | broadband packet wireless access |
| Keyword(3) | forward link |
| Keyword(4) | OFCDM |
| Keyword(5) | hybrid ARQ |
| 1st Author's Name | Atsushi Harada |
| 1st Author's Affiliation | Wireless Laboratories, NTT DoCoMo, Inc.() |
| 2nd Author's Name | Sadayuki Abeta |
| 2nd Author's Affiliation | Wireless Laboratories, NTT DoCoMo, Inc. |
| 3rd Author's Name | Mamoru Sawahashi |
| 3rd Author's Affiliation | Wireless Laboratories, NTT DoCoMo, Inc. |
| Date | 2001/11/13 |
| Paper # | RCS 2001-181 |
| Volume (vol) | vol.101 |
| Number (no) | 437 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |