Precoded Transmit Path Diversity in FS-OFDM on UWB Channels

Precoded Transmit Path Diversity in FS-OFDM on UWB Channels
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UWB 信道上 FS-OFDM 中的预编码传输路径分集

DOI:
10.1007/s11277-011-0478-1
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发表时间:
2011
影响因子:
2.2
通讯作者:
Mohammad Ghavami
Mohammad Ghavami
中科院分区:
计算机科学4区
文献类型:
--
作者:
西村晴輝;稲森真美子;眞田幸俊;Mohammad Ghavami

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在脉冲无线电或DS/SS UWB通信中,已经提出了一种在降低移动终端计算复杂度的同时实现路径分集的预捕获方案。另一方面,在ofdm系统中,已经提出了利用单天线实现路径分集的分数采样技术。然而,在FS-ofdm系统中,需要对接收信号进行过采样,从而导致终端侧的功率消耗较大。本文提出了一种基于预编码的传输路径分集方案。该方案可以在不对接收信号进行过采样的情况下实现路径分集。
In impulse-radio or DS/SS UWB communications, a prerake scheme has been proposed to achieve path diversity while reducing computational complexity in a mobile terminal. On the other hand, in an OFDM system, fractional sampling (FS) has been proposed to achieve path diversity with a single antenna. However, in the FS-OFDM system, it is necessary to oversample a received signal that leads to larger power consumption in the terminal side. In this paper, a precoded transmit path diversity scheme in an OFDM system has been proposed. The proposed scheme can achieve path diversity without oversampling the received signal.
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