Differential space-time ultra-wideband communications
Differential space-time ultra-wideband communications
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差分时空超宽带通信
DOI：
10.1109/icu.2005.1569993
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
J. Belfiore
中科院分区：
文献类型：
--
作者：
C. Abou;N. Daniele;J. Belfiore
在本文中，我们提出了两个空时方案，利用多天线脉冲无线电超宽带（IR-UWB）系统的分集时，既没有发射机，也没有接收机的信道状态信息。第一种方案通过差分相移键控和置换码的组合对相同数据符号的脉冲进行编码，并且可以与任何数量的发射和接收天线相关联。第二种方案利用两个发射天线对不同的符号进行编码。这些方案与Rake接收机相关联，并且实现了全空间和多径分集，对于恒模多维星座没有数据速率损失。这些计划的自适应版本也被提出，并示出在固定的室内信道的相干接收机的性能接近。
In this paper, we present two space-time schemes for exploiting diversity in multi-antenna impulse radio ultra wide-band (IR-UWB) systems when neither the transmitter nor the receiver has access to channel state information. The first scheme encodes the pulses of the same data symbol by a combination of differential phase shift keying and permutation codes and can be associated with any number of transmit and receive antennas. The second scheme encodes different symbols with two transmit antennas. These schemes are associated with Rake receivers and achieve full spatial and multi-path diversity with no data rate loss for constant-modulus multi-dimensional constellations. Adaptive versions of these schemes are also presented and shown to approach the performance of coherent receivers in stationary indoor channels.