目前，LTE系统小区间干扰消除的原理是对干扰小区的干扰信号进行某种程度的解调甚至解码，然后利用接收机的处理增益从接收信号中消除干扰信号分量。在LTE中，考虑过两种干扰消除方法。一是基于多天线接收终端的空间干扰压制技术又称为干扰抑制合并(Interference Rejection Combining，IRC)接收技术，二是基于干扰重构／减去的干扰消除技术。 本论文主要针对IRC技术进行了深入研究。首先，针对LTE上行传输技术，重点介绍了物理共享信道(PUSCH)和上行OFDM抗衰落机制分析，以及在终端发送时所采用的两种MIMO方式。接下来介绍了LTE中的小区间干扰消除技术，该部分是进行算法仿真的基础。 其次，重点研究了上行干扰消除技术中的MRC技术和IRC技术，以及两种技术的性能对比。分别对低相关信道下的MRC和IRC性能进行了仿真。在此基础上，研究了信道估计的精度对IRC、MRC性能的提升，特别是本文提出新方法“时域二次加窗”降噪方法使IRC、MRC性能提升几乎达到理想信道估计性能。 最后，由于矩阵求逆的复杂度是随着矩阵的维数以 向上递增，所以对IRC本身 的降复杂度进行了分析。对 矩阵各种形式：满阵、 简化、 逆简化的性能仿真进行了对比。本文最后重点提出了自适应IRC算法。在切换准则下，可以在MRC和IRC算法完成自由切换，从而达到提高系统性能的目的。通过仿真，进一步说明了本文提出的自适应算法在LTE系统中的可行性和有效性。

At present, in LTE, the principle of inter-cell interference cancellation is demodulating even decoding interference signal of interference cell in a certain extent; then using processing gain of the receiver to eliminate the interference signal components from the received signal. In LTE system, two interference cancellation methods are considered. One is space interference suppression technique based on multi-antenna receiving terminal, also known as interference suppression combined (Interference Rejection Combining, IRC) receiver technology, the second is interference cancellation technology based on interference reconstruction/minus. This paper focuses on depth study of the IRC technology. First of all, the production of physical shared channel (PUSCH) and OFDM fading analysis and two MIMO modes in the terminal are highlighted for the LTE uplink transmission technology. Next, introduce LTE Inter-cell interference cancellation technology, and this part is the basis of the algorithm simulation. Second, the MRC and IRC of the uplink interference cancellation technologies are studied, including performance comparison of the two techniques. The performance of MRC and IRC in the low correlated channel is simulated. On this basis, the channel estimation accuracy enhances the performance of IRC and MRC, especially the new method, that is time domain quadratic windowing methods, which is proposed in this paper makes the performance of IRC and MRC increase that almost achieved the performance of ideal channel estimation. Finally, the complexity of matrix inversion increased in with the dimensions of the matrix, so the down complexity of for IRC itself is analyzed. The performance simulation of various forms of Matrix is compared, including full array, simplify and inverse simplify. The end of this paper highlights the adaptive IRC algorithm. In the switching criterion, the MRC and IRC algorithm can be switched freely to achieve the goal of improving system performance. Through simulation, the feasibility and effectiveness of the proposed adaptive algorithm is further illustrated in LTE system.