Polarization division multiple access (PDMA) is a method to simultaneously transmit two independent signals by using vertical and horizontal polarization in the same frequency band. In PDMA systems, the received signal can experience significant interference from cross-polarized signals if the transmit and receive antennas are misaligned in terms of polarization state. In this paper, a precoding technique to solve this problem is discussed and a channel model to disentangle vertical and horizontal components from the received signal and include the rotation of receive antenna is proposed. The precoding technique is designed and analyzed using a channel model assuming a line-of-sight environment. To measure the performance of the precoding technique, a testbed is implemented using a software-defined radio platform. Simulation and measurement show that enhanced channel gain is achieved even when the polarization state between the transmit and receive antennas is mismatched. Comparison between simulation and measurements proves a basic and crucial principle concerning the capability of controlling the polarization state of a transmitted signal.
|Title of host publication||2017 IEEE 85th Vehicular Technology Conference, VTC Spring 2017 - Proceedings|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Publication status||Published - 2017 Nov 14|
|Event||85th IEEE Vehicular Technology Conference, VTC Spring 2017 - Sydney, Australia|
Duration: 2017 Jun 4 → 2017 Jun 7
|Name||IEEE Vehicular Technology Conference|
|Conference||85th IEEE Vehicular Technology Conference, VTC Spring 2017|
|Period||17/6/4 → 17/6/7|
Bibliographical noteFunding Information:
ACKNOWLEDGMENT This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2015R1D1A3A01019560) and by a grant (16CTAP-C098206-02) from the Technology Advancement Research Program (TARP) funded by Ministry of Land, Infrastructure, and Transport of the Korean government.
All Science Journal Classification (ASJC) codes
- Computer Science Applications
- Electrical and Electronic Engineering
- Applied Mathematics