Design of Novel Multi-Level Quasi-Orthogonal Codes for Mc-MC-CDMA System(Wireless Communication Technologies)
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概要
- 論文の詳細を見る
The number of bipolar orthogonal codes such as Walsh-Hadamard (WH) is limited due to implementation complexity which is proportional to the number of generated codes. Therefore, the data rate of multi-code systems is restricted too. This paper presents a design of novel multi-level quasi-orthogonal codes (MLQOCs) using advanced orthogonal code group (AOCG) derived from WH matrix to provide more spreading codes while retaining the chip-rate and length of the original WH codes. Moreover, we propose a multi-code multi-carrier CDMA (Mc-MC CDMA) system using MLQOCs to obtain high and variable transmission speed.
- 社団法人電子情報通信学会の論文
- 2006-06-01
著者
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Khuong Ho
Department Of Electrical Engineering University Of Ulsan
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Kong Hyung
Department Of Electrical Engineering University Of Ulsan
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