The much higher frequencies in the Terahertz (THz) band prevent the effective utilization of channel models dedicated for microwave or millimeter-wave frequency bands. In this paper, a measurement campaign is conducted in an indoor corridor scenario at 306-321 GHz with a frequency-domain Vector Network Analyzer (VNA)-based sounder. To realize high-resolution multipath component (MPC) extraction for the direction-scan measurement campaigns in the THz band, a novel modified space-alternating generalized expectation-maximization (SAGE) algorithm is further proposed. Moreover, critical channel characteristics, including the path loss, shadow fading, K-factor, delay spread, angular spreads, cluster parameters, and cross correlations are calculated and analyzed in the LoS case. Besides, two contrasted measurement campaigns in the NLoS case are conducted, with and without additional reflective foils on walls to serve as effective scatterers. Comparison results indicate that the reflective foils are useful to improve the channel conditions in the NLoS case by nearly 6 dB, which is potential to be utilized as alternative of intelligent reflecting surfaces (IRS) to enhance the coverage ability of THz communications.

翻译：Terahertz (Thz) 频段的频率要高得多,因而无法有效利用专门用于微波或毫米波频带的频道模型。在本文中,在306-321 GHz的室内走廊情景下进行了测量活动,以306-321 GHz为频率-主矢量网络分析仪(VNA)为基声器。为了在Thz波段中实现定向扫描测量运动的高分辨率多光谱部分(MPC)提取,还进一步提议了一种新颖的修改的空间隔热通用期望-高度一致(SAGE)算法。此外,在LOS案中,还计算和分析了关键频道特性,包括路径丢失、阴影淡化、K-factor、延迟扩散、角扩散、角扩散、集束参数和交叉关联等。此外,在NLOS 案中,还进行了两个对比式的测量活动,在墙上没有额外的反射根块作为有效的散射器进行。比较结果表明,反射式福子对于改善NLOS 的频道状况很有用,近6 dB,这有可能用作智能反射S 的地面通信的替代。