基于低精度量化的无线传输理论最新研究进展

5G移动通信技术相比于目前的4G移动通信技术,其峰值速率将增长数十倍,达到吉比特.未来移动通信系统面临着硬件成本高昂、系统功率消耗过高等问题,成为高传输速率通信的主要瓶颈之一.为了解决上述问题,学术界展开了对低功耗高效传输技术的研究,其中能够有效解决上述问题的途径之一就是低精度(如1～3 bit) ADC的接收机.通过对高斯信道下低精度量化的信道容量进行分析,发现相较于传统高精度ADC接收机,2～3 bit的ADC所带来的信道容量损失在可接受的范围内.面向低精度量化在无线通信系统中的应用,综合论述了低精度量化对信道容量的影响以及低精度量化下接收机的设计,解决了低精度量化下诸如同步、增益控制、信道估计等问题,为低精度量化通信系统的具体实现提供指导.

An overview of low resolution quantization in wireless communication system

Compared to the 4th generation (4G) mobile communication technology,the 5th generation (5G) mobile communication technology will provide tens of times of peak rate increase,reaching up to several thousands megabit per second.The coming wireless communication systems face the problems of expensive hardware cost and high power consumption,which is becoming a bottleneck of high-rate communication systems.To cope with these problems,redesigning communication systems with the receiver using fimite precision analog-to-digital converters (ADC) is one possible approach.The analysis of recent information theory for the AWGN channel shows that the performance loss due to 2～3 bit ADC acceptable.The application of low resolution quantizafion in wireless communication systems was focused on,an overview of the channel capacity and receiver design under low-precision ADC was provided.