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학술대회 Time-Division Multiplexing Based MIMO Channel Sounder Using Loosely Synchronous Codes
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저자
김원섭, 박재준, 김명돈, 정현규
발행일
200709
출처
Vehicular Technology Conference (VTC) 2007 (Fall), pp.897-901
DOI
https://dx.doi.org/10.1109/VETECF.2007.196
협약과제
07MM1700, 차세대 이동통신용 무선 공간채널 특성 연구, 정현규
초록
In this paper, we propose the time-division multiplexing (TDM) based MIMO channel sounding technique using loosely synchronous (LS) codes for real time measurement of MIMO radio channel. Since LS codes have perfect auto-correlation and cross-correlation functions within certain vicinity of the zero shifts, the proposed technique can substantially reduce multipath channel interference. When cumulative distribution functions (CDFs) of absolute Root Mean Square (RMS) delay spread error are considered, simulation results show that the proposed technique outperforms the conventional TDM based MIMO channel sounding technique. Moreover, in the MIMO channel environment where a mobile station moves with various speeds, the proposed technique is more efficient than the conventional TDM based MIMO channel sounding technique, because the proposed technique obtains about twice the measurement data of the conventional TDM based MIMO channel sounding technique at given time slots. © 2007 IEEE.
KSP 제안 키워드
Auto-Correlation, Channel Interference, Channel Sounder, Cross-Correlation, Cumulative Distribution Function(CDF), MIMO channel sounding, Mobile station(MS), Multipath channels, Real-time measurement, Time division multiplexing, Time slot