The dynamic time division duplex (TDD) system has been proposed as a way to meet today's asymmetrically and dynamically changing traffic demand. However, this approach causes cross-link interference, because neighboring base stations and user elements transmit in opposite directions. In this paper, we investigate and analyze the characteristics of cross-link interference in dynamic TDD systems. Based on this observation, we propose an aligned reverse frame structure to utilize and cancel the cross-link interference. Mathematical analysis and numerical results verify that the proposed scheme achieves performance enhancement in terms of capacity compared with conventional dynamic TDD systems.
Bibliographical noteFunding Information:
Manuscript received July 16, 2016; revised January 5, 2017, April 28, 2017, and July 11, 2017; accepted July 27, 2017. Date of publication August 8, 2017; date of current version October 9, 2017. This work was supported in part by the National Research Foundation of Korea (NRF) grant funded by the Korea government (NRF-2015R1A2A1A01006162) and in part by Institute for Information & communications Technology Promotion (IITP) grant funded by the Korea government (MSIP) (2016-0-00181-002, Development on the core technologies of transmission, modulation and coding with low-power and low-complexity for massive connectivity in the IoT environment & No. R0101-16-244, Development of 5G Mobile Communication Technologies for Hyper-connected smart services). The associate editor coordinating the review of this paper and approving it for publication was S. Mukherjee. (Corresponding author: Daesik Hong.) K. Lee, Y. Park, and D. Hong are with the Information Telecommunication Laboratory, School of Electrical and Electronic Engineering, Yonsei University, Seoul 03722, South Korea (e-mail: firstname.lastname@example.org; email@example.com).
© 2017 IEEE.
All Science Journal Classification (ASJC) codes
- Computer Science Applications
- Electrical and Electronic Engineering
- Applied Mathematics