LTE无线网络上行64QAM技术运用研究

摘要

In order to expand the capacity and increase uplink communication rate, it is necessary to use a higher-order modulation technique. At present, 64QAM is the highest-order technique supported by LTE uplink communication. Compared with 16QAM uplink modulation, it can increase 50% of data rate theoretically. The application of uplink 64QAM is closely related to SINR, BLER and UE’s CQI. 64QAM modulation technique was studied and different metric improvements in the light of testing results were summarized to present the SINR threshold value to steadily use up-link 64QAM. Finally, the network planning suggestion was put forward.%为了扩大容量，提升上行通信速率，需使用更高阶的调制解调技术。目前LTE上行通信支持的最大调制为64QAM，相较16QAM上行调制，其理论上可提升50%的速率，上行64QAM的运用与SINR、BLER以及UE反馈的CQI等都有密切的联系。主要研究64QAM调制技术以及通过试点测试结果总结各项指标提升情况，给出稳定使用上行64QAM的网络指标SINR门限值，最后提出未来网络规划建议。