PMID- 36236281 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20221019 IS - 1424-8220 (Electronic) IS - 1424-8220 (Linking) VI - 22 IP - 19 DP - 2022 Sep 22 TI - Analysis of OSTBC-OFDM Combined with Dual-Polarization and Time-Diversity in Millimeter-Wave MIMO Channels with Rain Distortions. LID - 10.3390/s22197182 [doi] LID - 7182 AB - Various destructive weather and physical phenomena affect many parameters in the radio layer (i.e., affecting the wireless paths Over-The-Air (OTA)) of many outdoor-to-outdoor wireless systems. These destructive effects create polarization torsion and rotation of the signals propagating in space and cause the scattering of wireless spatial paths. The direct meaning is a significant degradation in system performance, especially in the Quality-of-Service (QoS). Under these challenging scenarios, intelligent utilization of advanced Multiple-Input-Multiple-Output (MIMO) techniques such as polarization-diversity and time-diversity at the transmitter, as well as at the receiver, and intelligent use of the Cross-Polarization-Isolation (XPI) mechanism, are essential. We prove that combining these techniques with the tuning of the XPI of the antennas creates optimal conditions in the wireless MIMO channels. This combination does not only improve the system's performance, but also turns the destructive physical phenomena in the spatial-domain, into an advantage. In this article, we focus on formulating a wireless communication MIMO model in millimeter-Wave (mmWave) channels under rain distortions. We demonstrate the optimal use of combining Orthogonal-Space-Time-Coding (OSTBC) and Maximal-Ratio-Receive-Combiner (MRRC) with cross-polarization diversity techniques, that utilize the tuning of the XPI. An analytical exact optimal solution is proposed, that allows the tuning of the leading parameters to achieve global optimal performance, in terms of channel-capacity and Bit-Error-Rate (BER). In addition, we propose a process of approximation of feedback-closed-loop-MIMO. The feedback is employed between the transmitter and the receiver, in the scenario of changes in the channel-response-matrix in-between successive symbol-times. The feedback was designed to acheive global-maximum channel-capacity, while preserving the channel-path orthogonality in order to minimize the BER. FAU - Elgam, Avner AU - Elgam A AUID- ORCID: 0000-0002-4387-0669 AD - Faculty of Engineering, Ariel University, Ariel 40700, Israel. FAU - Peretz, Yossi AU - Peretz Y AD - Department of Computer Sciences, Lev Academic Center, Jerusalem College of Technology, Jerusalem 9372115, Israel. FAU - Pinhasi, Yosef AU - Pinhasi Y AUID- ORCID: 0000-0001-6887-8571 AD - Faculty of Engineering, Ariel University, Ariel 40700, Israel. LA - eng PT - Journal Article DEP - 20220922 PL - Switzerland TA - Sensors (Basel) JT - Sensors (Basel, Switzerland) JID - 101204366 SB - IM PMC - PMC9572720 OTO - NOTNLM OT - MIMO diversity techniques OT - XPI mechanism OT - mmWave wireless communication systems OT - rain distortion COIS- The authors declare no conflict of interest. EDAT- 2022/10/15 06:00 MHDA- 2022/10/15 06:01 PMCR- 2022/09/22 CRDT- 2022/10/14 02:35 PHST- 2022/09/04 00:00 [received] PHST- 2022/09/15 00:00 [revised] PHST- 2022/09/19 00:00 [accepted] PHST- 2022/10/14 02:35 [entrez] PHST- 2022/10/15 06:00 [pubmed] PHST- 2022/10/15 06:01 [medline] PHST- 2022/09/22 00:00 [pmc-release] AID - s22197182 [pii] AID - sensors-22-07182 [pii] AID - 10.3390/s22197182 [doi] PST - epublish SO - Sensors (Basel). 2022 Sep 22;22(19):7182. doi: 10.3390/s22197182.