Reconstruction Methods of Tree Structure of Orthogonal Spreading Codes for DS-CDMA (Special Section on Spread Spectrum Techniques and Applications)
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概要
- 論文の詳細を見る
In CDMA mobile system, network connection is constructed with orthogonal spreading codes assigned to each user in order to distinguish one from the other. The number of distinguishable codes and the process speed are different according to the orthogonal spreading factors which, in another literature, can be described as the tree structure. In this paper, we investigate methods to improve the quality of services (QoS) of communication, by changing the spreading factors of orthogonal spreading codes according to the number of users. We propose the effective method to reconstruct the tree structure of orthogonal spreading codes for supporting various data rates transmission in DS-CDMA mobile system. We compare spreading factors with and without the reconstruction and evaluatee the effectiveness of the reconstruction method.
- 社団法人電子情報通信学会の論文
- 2000-11-25
著者
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Hasanudin Haris
International Division Of Mitsubishi Information Network With Digital Communication (mind) Japan
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Yamamoto Ushio
The Department Of Computer Science Faculty Of Engineering Gunma University
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Yamamoto Ushio
The Department Of Computer Science Gunma University
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Onozato Yoshikuni
The Department Of Computer Science Faculty Of Engineering Gunma University
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Onozato Yoshikuni
The Department Of Computer Science Gunma University
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