Capacity Calculation and Sub-Optimal Power Allocation Scheme for OFDM-Based Systems

• 作者: Abhishek Chakraborty Sanjay Kumar Somnath Das
• 来源期刊: 通讯与网络(英文)
• 学科: 工学
• 关键词: INTERFERENCE REDUCTION LTE-A OFDMA Power LOADING System Capacity
• 年，卷（期）: 2012,（4）
• 页码范围: 292-297
• 页数: 6页
• 分类号: TN92

摘要

For emerging cellular wireless systems, the mitigation of inter-cell interference is the key to achieve a high capacity and good user experience. This paper is devoted to the performance analysis of interference mitigation techniques for the downlink in an orthogonal frequency division multiple access (OFDMA) network, with a focus on the Long Term Evolution-Advanced (LTE-A) standard. Here we have derived a general closed-form equation of system capacity taking multiple cells into consideration and then we have investigated a coordination technique for interference mitigation. For the given interference constraint, how power should be transmitted into each OFDM sub-carrier for prevailing channel condition such that the total transmission rate of the base station can be maximized.