摘要
为了进一步提升下行通信的传输能力,提高有限资源的利用率,LTE-A系统在发送端给出采用专用导频端口的8层数据的映射方案。在LTE-A系统使用双码字和8层映射的基础上,设计了一种利用专用导频信息对双码字数据的解调算法,并通过仿真画出了LTE-A利用此算法解调数据的误码率。仿真结果表明,在无线环境较优时,利用此算法能够很好地控制误比特率(约为0.1),并证实了利用该算法解调数据的可靠性和实用性。
In order to further increase the transmission capacity of the downlink communication, improve the utilization of limited resources, a 8-layers data mapping scheme is given in LTE-A system which using the dedicated pilots in transmission-side. On the basis of dual code word and 8-layers mapping in LTE-A system, a demodulation algorithm to dual code word with the information on the use of dedicated pilots is designed in this paper. What is more, the simulation of bit error rate by using this demodulation algorithm is depicted. The system can control the bit error rate effectively （ about 0. 1 ） when the wireless environment is better. As well the effectiveness and practicality of using the design algorithms to demodulate data is confirmed by the simulation results.
出处
《电视技术》
北大核心
2014年第23期79-82,141,共5页
Video Engineering
基金
国家科技重大专项(2012ZX03001009-004)
