Joint Centralized Power Control and Cell Sectoring for Interference Management in CDMA Cellular Systems in a 2D Urban Environment

• 作者: Gholamreza Dadashzadeh Hamidreza Bakhshi Mohamad Dosaranian Moghadam
• 来源期刊: 无线传感网络(英文)
• 学科: 工学
• 关键词: CDMA CENTRALIZED Power Control Equal Sectoring FORWARD Link Rotatable Equal Sectoring Switched-Beam
• 年，卷（期）: 2010,（8）
• 页码范围: 599-605
• 页数: 7页
• 分类号: TN92

摘要

The interference reduction capability of cell sectoring and power control algorithms have been considered separately as means to decrease the interference in Code Division Multiple Access (CDMA) cellular systems. In this paper, we present Switched-Beam (SB) and Rotatable Equal Sectoring (RES) techniques for CDMA cellular systems in a 2D urban environment. In the SB technique by using a number of fixed, independent, or directional antennas we increase the downlink capacity of the CDMA systems. Also in the RES method, the equal sectors of the base stations are rotating together to decrease the inter-cell and intra-cell interferences. Also in this paper we use centralized power control to overcome the near-far problem. Simulation results indicate that the proposed techniques considerably increase the capacity of the CDMA cellular systems compared to ordinary Equal Sectoring (ES) method.