无线通信中的短码传输方案研究

发布时间：2018-06-04 05:30

本文选题：WLAN + 5G　；参考：《西南交通大学》2017年硕士论文

【摘要】：移动互联网的发展是近几年来推动社会进步发展的最大浪潮之一。在日常生活中,智能终端已经随处可见,人们利用智能终端接入网络,分秒之间便可以连接到世界上的任何角落。移动互联网的发展离不开无线通信技术的进步,它是信息在空间中飞速传递的高速公路。在无线通信这个大家庭中,WLAN (Wireless Local Area Network即无线局域网)和 4G (The 4th Generation mobile communication technology 即第四代移动通信技术)是目前与人们的日常生活联系得最紧密的两个无线通信系统。随着无线通信的发展,WLAN系统采用的IEEE802.11系列标准不断的更迭,推出新的版本;而4G标准的下一代5G标准也在如火如荼的制订之中。本论文通过对IEEE802.11系列标准和5G移动通信标准提案的深入学习,在目前正在制订中的802.11ax和5G标准提出的新的要求下,结合物理层编码方案中的卷积码和Polar码,提出了两种短码传输方案:WLAN省电模式下一种归零卷积码的缩短传输方案、5G中一种基于Polar码的识别码隐藏式传输方案。本论文提出的两种传输方案中,前者针对无线通信系统中特定的场景,基于编码方案的特性,在不牺牲纠错性能的情况下对传输信息进行了缩短处理,提升了传输效率,降低了信道开销;后者对Polar码的冻结比特序列的功能进行了挖掘和开发,为5G标准的技术选择提供了更多可能。因为这两种方案对传输信息的缩短有限,所以更适合应用在短码的传输场景中,对于中长码的传输场景,本论文所提方案的有益效果并不明显。本论文详细描述了所提的两种传输方案,并对方案进行了仿真验证。
[Abstract]:The development of mobile Internet is one of the biggest waves to promote social progress in recent years. In daily life, intelligent terminals have been widely seen. People can connect to any corner of the world in minutes and seconds by using intelligent terminals to access the network. The development of mobile Internet is inseparable from the progress of wireless communication technology. In the family of wireless communication, WLAN (Wireless Local Area Network) and 4G (the 4th Generation mobile communication technology) are the two wireless communication systems which are most closely related to people's daily life. With the development of wireless communication, the series of IEEE802.11 standards used in wireless communication systems are constantly changing and introducing new versions, and the next generation 5G standard of 4G standard is also in full swing. Through the in-depth study of IEEE802.11 series standards and 5G mobile communication standard proposals, under the new requirements of 802.11ax and 5G standards, this paper combines convolutional codes and Polar codes in the physical layer coding scheme. In this paper, we propose two short code transmission schemes, one of which is the shortening transmission scheme of return-to-zero convolutional code in the power saving mode of the Polar code, and a hidden transmission scheme of the identification code based on the Polar code. In the two transmission schemes proposed in this paper, the former is based on the characteristics of the coding scheme and shortens the transmission information without sacrificing the error-correcting performance to improve the transmission efficiency for the specific scenarios in the wireless communication system. The latter mine and develop the function of frozen bit sequence of Polar code, which provides more possibilities for the technical choice of 5G standard. Because these two schemes have limited shortening of transmission information, they are more suitable for short code transmission scenarios. The beneficial effect of the proposed scheme is not obvious for the medium and long code transmission scenarios. In this paper, two transmission schemes are described in detail and verified by simulation.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN92

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