OFDM系统抑制小区间干扰的SFR方案
首发时间:2011-08-19
摘要:在OFDM系统中,通常采用小区间干扰协调(ICIC)技术来抑制小区间的同频干扰,提高系统性能。频率复用因子(FRF)为3的软频率复用(SFR)方案有效地避免了小区间同频干扰的影响,是目前最常用的ICIC技术之一。但该SFR方案导致小区边缘用户峰值速率较低,系统容量还不够高。本文提出一种FRF为7的SFR方案,可较大地提高小区边缘用户的峰值速率,使系统容量得以提升。
关键词: 通信技术 小区间同频干扰 软频率复用 信号-干扰噪声比 系统容量
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A SFR scheme to suppress Inte-Cell Interfrence in OFDM system
Abstract:In order to improve system performance, OFDM system usually adopts inter-cell interference coordination (ICIC) to suppress co-frequency interference between the neighbor cells. The Frequency reuse factor (FRF) being three for soft frequency reuse (SFR) scheme which avoids the influence of inter-cell co-frequency effectly is one of the most common ICIC techniques. But the SFR scheme leads to provide low peak rate to users in the cell edge, and system capacity is not high enough. This paper proposes a FRF being three for SFR scheme which can raise the peak rate greatly in cell edge users and improve system capacity.
Keywords: Communication Technology Inter-Cell Interference Soft Frequency Reuse SINR Capacity
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