Item type |
学術雑誌論文 / Journal Article(1) |
公開日 |
2023-02-28 |
タイトル |
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タイトル |
Adaptive Subcarrier Block Modulation with Differentially Modulated Pilot Symbol Assistance for Downlink OFDM Using Uplink Delay Spread |
言語 |
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言語 |
eng |
キーワード |
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主題 |
DMPSA-ASMS/OFDM |
キーワード |
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主題 |
MLI |
キーワード |
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主題 |
coherence bandwidth |
キーワード |
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主題 |
RMS delay spread |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
著者 |
AHN, Chang-Jun
TAKAHASHI, Satoshi
HARADA, Hiroshi
KAMIO, Yukiyoshi
SASASE, Iwao
安, 昌俊
高橋, 賢
原田, 博司
神尾, 享秀
笹瀬, 巌
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抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
In AMS/OFDM systems, base station is in control of the modulation level of each subcarrier, and then, adaptive modulated packet is transmitted from the base station to the mobile station. In this case, the mobile station is required the modulation level information (MLI) to demodulate the received packet. The MLI is generally transmitted as a data symbol, therefore, the throughput is degraded. In an OFDM, the channel response at a particular subcarrier frequency is not supposed to be totally different from its neighboring frequencies, and hence, they must have correlation which depends on the coherence bandwidth of the channel Bc. If we could assign the same modulation level for coherently faded subcarrier block, MLI is required only one time for each subcarrier block. Moreover, we can assign the data on the empty space of pilot signals for increasing the total transmission. In this paper, we propose an adaptive subcarrier block modulation with differentially modulated pilot symbol assistance for downlink OFDM using uplink delay spread. |
書誌情報 |
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
巻 E88-A,
号 7,
p. 1889-1896,
発行日 2005-07-01
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出版者 |
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出版者 |
電子情報通信学会(IEICE) |
ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
0916-8508 |
書誌レコードID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA10826239 |
権利 |
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権利情報 |
copyright©2005 IEICE |
関連サイト |
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識別子タイプ |
URI |
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関連識別子 |
http://www.ieice.org/jpn/trans_online/ |
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関連名称 |
http://www.ieice.org/jpn/trans_online/ |
フォーマット |
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内容記述タイプ |
Other |
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内容記述 |
application/pdf |
著者版フラグ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |