Antenna Diversity Reception Appropriate for MMSE Combining in Frequency Domain for Forward Link OFCDM Packet Wireless Access(Special Issue on Mobile Multimedia Communications)
スポンサーリンク
概要
- 論文の詳細を見る
This paper presents an optimum antenna diversity combining method associated with despreading that employs Minimum Mean Square Error (MMSE) combining over the frequency domain in a frequency-selective fading channel for forward link Orthogonal Frequency and Code Division Multiplexing (OFCDM) wireless access, in order to achieve the maximum radio link capacity. Simulation results considering various propagation channel conditions elucidate that the antenna diversity combining method with Equal Gain Combining (EGC) subsequent to the despreading employing MMSE combining based on pilot symbol-assisted channel estimation and interference power estimation can decrease the required average received signal energy per bit-to-background noise power spectrum density ratio (E_b/N_0) the most, taking into account the impact of the inter-code interference. Furthermore, we clarify that the required average received E_b/N_0 for the average packet error rate of 10^<-2> employing the diversity combining scheme with EGC after despreading with MMSE combining is improved by approximately 0.3 dB compared to the diversity combining scheme with EGC before despreading with MMSE combining at the number of code-multiplexing of 24 for the spreading factor of 32 in a 24-path Rayleigh fading channel.
- 社団法人電子情報通信学会の論文
- 2002-10-01
著者
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SAWAHASHI Mamoru
Wireless Laboratories, NTT DoCoMo, Inc.
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Atarashi Hiroyuki
Wireless Laboratories, NTT DoCoMo, Inc.
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MAEDA Noriyuki
Radio Access Network Development Department, NTT DOCOMO, INC.
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ATARASHI Hiroyuki
Radio Access Network Development Department, NTT DOCOMO, INC.
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Sawahashi Mamoru
Department Of Electrical Engineering Tokyo University Of Science
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Sawahashi Mamoru
Wireless Laboratories Ntt Do Como Inc.
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ABETA Sadayuki
IP Radio Network Development Department, NTT DoCoMo, Inc.
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Abeta Sadayuki
Wireless Laboratories, NTT DoCoMo, Inc.
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Abeta S
Ip Radio Network Development Department Ntt Docomo Inc.
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Abeta Sadayuki
Wireless Laboratories Ntt Docomo Inc.
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Maeda Noriyuki
Radio Access Network Development Department Ntt Docomo Inc.
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Maeda N
Department Of Medical Biochemistry And Coe Program In The 21st Century School Of Pharmaceutical Scie
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Atarashi Hiroyuki
Radio Access Network Development Department Ntt Docomo Inc.
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Atarashi Hiroyuki
Wireless Laboratories Ntt Docomo Inc.
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MAEDA Noriyuki
Wireless Laboratories, NTT DoCoMo, Inc.
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