在TD-SCDMA系统中提出基于PIC(并行干扰消除)和SIC(串行干扰消除)的多小区信道估计技术,给出在这两种信道估计模式下多小区联合检测的性能。仿真表明,基于PIC和SIC的多小区信道估计技术可以明显提高系统性能,在采用这两种信道估计方式后,即使使用单小区联合检测也能提高系统性能,其中,基于PIC的多小区信道估计技术与多小区联合检测技术相结合,可以获得更大的增益。 In TD-SCDMA system, multi-cell channel estimation based on PIC and SIC is proposed, and the performance of multi-cell joint detection in these two channel estimation modes is given. The simulation shows that the multi-cell channel estimation based on PIC and SIC can obviously improve the system performance. After using these two channel estimation methods, even single-cell joint detection can improve system performance. Among them, the multi-cell channel estimation based on PIC Technology and multi-cell joint detection technology, you can get greater gain.