Multiple Access over Fading Multipath Channels Employing Chip-Interleaving Code-Division Direct-Sequence Spread Spectrum(Special Issue on Multiple Access and Signal Transmission Techniques for Future Mobile Communications)

スポンサーリンク

概要

• 論文の詳細を見る

• Multiple access interferecnce (MAI) is a major factor limiting the performance of direct-sequence code-division multiple access (DS-CDMA) systems. Since the amount of MAI is dependent on the correlation among user signals, one way to reduce it is to reduce such correlation. In mobile multiuser communication, each user experiences a different time-varying channel response. This user-dependent characteristic in channel variation can be exploited to assist the separation of different user signals, in addition to the capability provided by the spreading codes. As the correlation among different user channels are expected to decrease with increase in time span, enhanced decorrelation among different users' signals can be effected by spacing out the chips of one modulated symbol in time. Thus we consider chip-interleaving DS-CDMA (CI-DS-CDMA) in this study. We investigate its performance through theoretical analysis and computer simulation. Employing only a slightly modified rake receiver structure, CI-DS-CDMA is shown to attain significant performance gain over conventional DS-CDMA, in multiple access communication over single- and multi-path fading channels, without complicated multiuser detection. CI-DS-CDMA also has a lower demand for short-term power control than conventional DS-CDMA, especially in one-path Rayleigh fading. Results of the theoretical analysis and the computer simulation agree well with each other.

• 社団法人電子情報通信学会の論文
• 2003-01-01

著者

• Lin David

  Department Of Electronics Engineering And Center For Telecommunications Research National Chiao Tung

• Lin David

  Department Of Electronics Eng. National Chaio-tung University

• LIN Yu-Nan

  Department of Electronics Engineering and Center for Telecommunications Research National Chiao Tung

• Lin David

  Department Of Electronics Engineering And Center For Telecommunications Research National Chiao Tung

関連論文

• Global Motion Parameter Extraction and Deformable Block Motion Estimation
• TED-AJ03-539 MOLECULAR PLANE POISEUILLE FLOW FOR THE TIP4P AND LENNARD-JONES POTENTIALS
• Multiple Access over Fading Multipath Channels Employing Chip-Interleaving Code-Division Direct-Sequence Spread Spectrum(Special Issue on Multiple Access and Signal Transmission Techniques for Future Mobile Communications)
• Edge-Based Morphological Processing for Efficient and Accurate Video Object Extraction(Image Recognition, Computer Vision)

スポンサーリンク