中文题名: | 双选信道下单载波系统信道估计与均衡 |
姓名: | |
学号: | 1501120042 |
保密级别: | 公开 |
论文语种: | chi |
学科代码: | 081001 |
学科名称: | 工学 - 信息与通信工程 - 通信与信息系统 |
学生类型: | 硕士 |
学位: | 工学硕士 |
学校: | 西安电子科技大学 |
院系: | |
第一导师姓名: | |
第一导师单位: | |
完成日期: | 2018-04-09 |
答辩日期: | 2018-05-28 |
外文题名: | Research on channel estimation and equalization for single carrier systems over doubly selective fading channels |
中文关键词: | |
外文关键词: | Doubly selective fading channels ; channel estimation ; turbo equalization ; low complexity ; integrally oversampled |
中文摘要: |
高速宽带无线通信系统中,由于符号间隔降低,导致信号到达接收端的各延时路径可分辨,从而带来多径效应且引入了频率选择性衰落。此信道是非时变的,然而一旦通信双方中的一方处于高速运动中,或者周围环境快速变化,产生的多普勒频移(fd)将引入时间选择性,从而形成时间频率双选择性信道,简称双选信道。日常生活中高速行驶的汽车、高铁与汹涌海平面上的船只等均是双选信道存在的典型场景,并且通信信号将遭遇相比较静态多径信道更严重的干扰与衰落。因此双选信道的信道估计与均衡技术引起了广泛的关注。 |
外文摘要: |
In high-speed wideband wireless communication systems, due to the reduced symbol interval, several paths of signals with different path delays can be classified at the receiver, which caused multipath effects and introduced frequency selective fading. The channel is not time-varying. However, once each of the communication partners is in high-speed motion, or the surrounding environment changes rapidly, the resulting Doppler shift (fd) will introduce the time-selectivity, thus forming a time-varying and frequency selective fading channel, referred to as doubly selective fading channels. In our daily life, such as the high-speed cars, trains or ships on rough sea are typical sites for doubly selective fading channels. |
中图分类号: | 11 |
馆藏号: | 11-37726 |
开放日期: | 2018-12-21 |