A novel interference-resolving algorithm to support asymmetric services in TDD-CDMA systems with directional antennas

Li-Chun Wang*, Shi Ye Huang, Yu-Chee Tseng

*此作品的通信作者

研究成果: Conference article同行評審

7 引文 斯高帕斯(Scopus)

摘要

This paper presents a new cross-slot interference-resolving algorithm for supporting unbalance traffic between downlink and uplink in TDD-CDMA systems. To avoid cross-slot interference between downlink and uplink, traditional algorithms typically require a global control on the transmission direction in each time slot among all cells. Obviously, this requirement significantly limits one of the key advantages in the TDD system - enabling different rate asymmetry. We observe that the tri-sector cellular architecture possesses additional orthogonality inherently due to the directivity of directional antenna, which can provide an additional degree of freedom in allocating radio resource (i.e., time slots). Thus we propose a new distributed slot allocation algorithm based on the tri-sector cellular architecture. The advantage of the proposed algorithm is to enable a TDD-CDMA system to provide asymmetric services with different rates of asymmetry in all cells, thereby having more flexibility in handling uniform traffic patterns.

原文English
文章編號1002720
頁(從 - 到)327-330
頁數4
期刊IEEE Vehicular Technology Conference
1
DOIs
出版狀態Published - 7 五月 2002
事件55th Vehicular Technology Conference - Birmingham, AL, United States
持續時間: 6 五月 20029 五月 2002

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