BER performance evaluation of HF MIMO spatial multiplexing systems
BER performance evaluation of HF MIMO spatial multiplexing systems
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HF MIMO 空间复用系统的 BER 性能评估
DOI：
10.1109/ursigass.2014.6929715
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Oghre O
中科院分区：
文献类型：
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作者：
Oghre O
只提供摘要形式。在过去十年中，无线通信系统中对提高数据速率和有效频谱利用的渴望已经将基本的单输入单输出（SISO）通信系统模型演变为在Foschini， Gans和Telatar的开创性工作之后，现在在通信系统的两端部署了多个天线[1-2]。这种多天线系统现在通常被称为多输入多输出（MIMO）通信或更普遍的时空通信，承诺在多径丰富信道条件下，在通信系统的两端部署的最小天线数量相应增加数据速率。因此，一系列的研究工作一直在探索在许多传统通信系统中采用MIMO概念的可能性。到目前为止，大多数研究都集中在UHF、VHF和SHF频段。在高频波段，电离层和地面反射中不同电离层的存在导致了连接发射机和接收机的多条路径。这些多路径导致的低数据速率可以通过MIMO技术来缓解。然而，与在较高频带中的传播不同，高频频带中的多路径数量有限，这可能导致MIMO系统的数据速率适度增加。鉴于MIMO技术在其他现有通信系统中的应用取得了进展，最近，一些努力已针对高频频段。然而，大部分工作都是在实验测量中进行的[3-5]，而其他工作如[6-7]则侧重于建立发射和接收天线之间的信道容量增加和去相关，很少致力于建立潜在的系统性能。在本文中，我们提出了基于在英国达勒姆和莱斯特之间的255公里无线电链路上进行的现场测量的高频信道的误码率（BER）性能评估，使用[4-5]中报道的异构同址天线。传输由连续波（CW）传输组成，使用5.255 MHz的标称频率，传输间隔为10 Hz，以帮助区分接收器上的信号。然后对接收到的数据进行滤波，恢复接收到的连续波信号。b[5]中报道了实验装置的详细描述。接收到的经过滤波的CW信号样本如图1所示。对数据进行进一步处理，提取MIMO信道矩阵，并在模拟器中用于表征MIMO信道。采用四种不同的检测方案设计了空间多路复用（SM） MIMO仿真器。这些是线性零强迫检测器，有序连续干扰消除（OSIC） VBLAST/ZF检测器，以及球体解码器（SD），本质上是一个低复杂性的最大似然（ML）检测器。采用QPSK的2 × 2 MIMO系统的结果显示在图2中，并与SISO曲线进行了比较。
Summary form only given. Over the last decade, the desire for increased data rate and efficient spectrum utilisation in wireless communication systems has evolved the basic single-input single-output (SISO) communication system model into one where multiple antennas are now deployed at both ends of the communication system following the pioneering work of Foschini, Gans and Telatar [1-2]. This system of multiple antennas now commonly referred to as multiple-input multiple-output (MIMO) communication or more generally space-time communication promises an increase in data rate commensurate to the minimum number of antennas deployed at either end of the communication system in multipath rich channel conditions. As a result, a flurry of research efforts has been on to explore the possibility of adopting the MIMO concept into many legacy communication systems. Most of the research has so far focused on the UHF, VHF and SHF bands. In the HF band the presence of different ionization layers in the ionosphere and ground reflections leads to multiple paths connecting the transmitter and the receiver. These multiple paths result in a low data rate which might be alleviated using MIMO technology. However, unlike propagation in the higher frequency bands, the number of multiple paths in the HF band is limited which can lead to a moderate increase in the data rate for MIMO systems. Given the advances recorded in the application of MIMO techniques to other existing communication systems, recently, some effort has been directed at the HF band. However, much of this work has been in experimental measurements [3-5], while others such as [6-7] have focused on establishing the channel capacity increase and de-correlation between transmit and receive antennas, with little effort directed at establishing the potential system performance. In this paper, we present the bit error rate (BER) performance evaluation of the HF channel based on field measurements conducted on a 255 km radio link between Durham and Leicester, in the UK, using heterogeneous co-located antennas reported in [4-5]. The transmission consisted of continuous wave (CW) transmissions using a nominal frequency of 5.255 MHz, with a 10 Hz separation between transmissions to help distinguish the signals at the receiver. The received data were then filtered to recover the received CW signals. Detailed description of the experimental set up is reported in [5]. Samples of the filtered received CW signals are shown in Fig. 1. The data were further processed to extract the MIMO channel matrices and used to characterize the MIMO channel in our simulator. A spatial multiplexing (SM), MIMO simulator was designed with four different detection schemes. These are linear Zero-Forcing detector, an Ordered Successive Interference Cancellation (OSIC) VBLAST/ZF detector, as well as a sphere decoder (SD), which is essentially a low complexity maximum likelihood (ML) detector. The results for a 2 by 2 MIMO system employing QPSK are displayed in Figure 2 and compared with the SISO curve.
使用紧凑型天线阵列在 HF 频段内进行 MIMO 通信
DOI：
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发表时间：
2010
期刊：
影响因子：
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作者：
S. Gunashekar;E. M. Warrington;S. M. Feeney;S. Salous;N. Abbasi
通讯作者：
N. Abbasi