상세정보
학술지
Improved Polarized 2x2 MIMO Spatial Multiplexing Method for DVB-NGH System
- 발행일
- 201512
- 출처
- IEEE Transactions on Broadcasting, v.61 no.4, pp.729-733
- ISSN
- 0018-9316
- 출판사
- IEEE
- 협약과제
- 15MR3300, (통합)융합형 실감방송 서비스 및 전송 기술 개발, 허남호
- 초록
- Recently terrestrial digital broadcasting systems have experienced a growth with the demand of high-data rate. In order to meet such demand, the multiple-input multiple-output (MIMO) technology has received wide attention. This paper proposes a pre-coding method, which provides high-space channel correlation for the improved performance over terrestrial broadcasting channels when the MIMO spatial multiplexing (SM) is adopted for digital video broadcasting-next generation handheld systems. When signals with two different modulation orders are transmitted through two antennas, a method that is based on non-uniform power is also proposed for improved reception performance. To optimize the proposed method, phase shifting values for the pre-coding method and appropriate non-uniform power ratio are obtained. These obtained parameters are applied to a terrestrial broadcasting system, and then the performance improvement over the conventional SM is shown through computer simulations.
- KSP 제안 키워드
- Broadcasting system, Channel correlation, Coding method, Computer simulation(MC and MD), DVB-NGH, Digital video broadcasting, Multiple input multiple output(MIMO), Non-uniform, Terrestrial Broadcasting, Terrestrial Digital Broadcasting, data rate