Presentation | 2002/7/12 Comparison of Radio Link Capacity between MC/DS-CDMA and MC-CDMA for Reverse Link Broadband Packet Wireless Access Shingo Suwa, Hiroyuki Atarashi, Mamoru Sawahashi, |
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Abstract(in Japanese) | (See Japanese page) |
Abstract(in English) | This paper compares the radio link capacity between multi-carrier/DS-CDMA(MC/DS-CDMA) and multi-carrier CDMA(MC-CDMA) for reverse link broadband packet wireless access, taking into consideration: the asynchronous signal reception at the receiver; the path timing or symbol timing detection; and channel estimation error. Simulation results show that, although the influence of the asynchronous signal reception on the packet error rate (PER) performance in MC-CDMA is slight, the degradation caused by the channel estimation error in MC-CDMA is severe compared to that caused by the path timing detection error in MC/DS-CDMA. Consequently, the required average received signal energy per bit-to-background noise spectrum density ratio (E_b/N_o) at the average PER of 10^-2 in MC/DS-CDMA is reduced by approximately 4.5 dB compared to that in MC-CDMA assuming a 12-path exponential decayed Rayleigh fading channel. Furthermore, the number of accommodated users in MC/DS-CDMA is 2.5 fold greater than that in MC-CDMA, employing 2-branch antenna diversity reception. Therefore, we conclude that MC/DS-CDMA is more appropriate than MC-CDMA for the reverse link broadband packet wireless access. |
Keyword(in Japanese) | (See Japanese page) |
Keyword(in English) | broadband packet wireless access / reverse link / MC/DS-CDMA / MC-CDMA / asynchronous signal reception / path/symbol timing detection / channel estimation |
Paper # | NS2002-106 |
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Committee | NS |
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Conference Date | 2002/7/12(1days) |
Place (in Japanese) | (See Japanese page) |
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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) | Comparison of Radio Link Capacity between MC/DS-CDMA and MC-CDMA for Reverse Link Broadband Packet Wireless Access |
Sub Title (in English) | |
Keyword(1) | broadband packet wireless access |
Keyword(2) | reverse link |
Keyword(3) | MC/DS-CDMA |
Keyword(4) | MC-CDMA |
Keyword(5) | asynchronous signal reception |
Keyword(6) | path/symbol timing detection |
Keyword(7) | channel estimation |
1st Author's Name | Shingo Suwa |
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 | Mamoru Sawahashi |
3rd Author's Affiliation | Wireless Laboratories, NTT DoCoMo, Inc. |
Date | 2002/7/12 |
Paper # | NS2002-106 |
Volume (vol) | vol.102 |
Number (no) | 203 |
Page | pp.pp.- |
#Pages | 6 |
Date of Issue |