Online SNR Estimation for Parallel Combinatorial SS Systems in Nakagami Fading Channels(Special Section on Spread Spectrum Techniques and Applications)
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概要
- 論文の詳細を見る
In this paper, an online SNR estimator is proposed for parallel combinatorial SS (PG/SS) systems in Nakagami fading channels. The PC/SS systems are called as partial-code-parallel multicode DS/SS systems, which have the higher-speed data transmission capability comparing with conventional multicode DS/SS systems referred to as all-code-parallel systems. We propose an SNR estimator based on a statistical ratio of correlator outputs at the receiver. The SNR at the correlator output is estimated through a simple polynomial from the statistical ratio. We investigate the SNR estimation accuracy in Nakagami fading channels through computer simulations. In addition, we apply it to the convolutional coded PC/SS systems with iterative demodulation and decoding to evaluate the estimation performance from the viewpoint of error rate. Numerical results show that the PC/SS systems with the proposed SNR estimator have superior estimation performance to conventional DS/SS systems. It is also shown that the bit error rate performance using our SNR estimation method is close to the performance with perfect knowledge of channel state information in Nakagami fading channels and correlated Rayleigh fading channels.
- 社団法人電子情報通信学会の論文
- 2002-12-01
著者
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SASAKI Shigenobu
Department of Electrical and Electronic Engineering, Niigata University
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KIKUCHI Hisakazu
Department of Electrical and Electronic Engineering, Niigata University
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ZHOU Jie
Department of Electrical and Electronic Engineering, Niigata University
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MURAMATSU Shogo
Department of Electrical and Electronic Engineering, Niigata University
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Sasaki Shigenobu
Department Of Electrical And Electronic Engineering Niigata University
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Zhou J
Department Of Electrical And Electronic Engineering Niigata University:(present Address)department O
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TAKIZAWA Ken-ichi
Niigata University
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Zhou Jie
Denartment Of Electrical And Electronic Engineering Niigata University
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Muramatsu S
Department Of Electrical And Electronic Engineering Niigata University
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Zhou Jie
Department Of Electrical And Electronic Engineering Niigata University:(present Address)department O
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Sasaki S
Department Of Electrical And Electronic Engineering Niigata University
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Muramatsu Shogo
Niigata Univ. Niigata Jpn
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TAKIZAWA Ken-ichi
Department of Electrical and Electronic Engineering, Niigata University
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Kikuchi Hisakazu
Niigata Univ. Niigata Jpn
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Kikuchi Hisakazu
Dept. Of Electrical And Electronic Eng. Niigata University
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Kikuchi Hisakazu
Department Of Electrical And Electronic Engineering Graduate School Of Science And Technology
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Muramatsu Shogo
Department Of Electrical And Electronic Engineering Niigata University
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Takizawa K
National Inst. Of Information And Communications Technol. Yokosuka‐shi Jpn
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ZHOU Jie
Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital
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