TIIS (한국인터넷정보학회)
Current Result Document :
| 한글제목(Korean Title) |
Iterative Detection and ICI Cancellation for MISO-mode DVB-T2 System with Dual Carrier Frequency Offsets |
| 영문제목(English Title) |
Iterative Detection and ICI Cancellation for MISO-mode DVB-T2 System with Dual Carrier Frequency Offsets |
| 저자(Author) |
Eun-Sung Jeon
Jeong-Wook Seo
Jang-Hoon Yang
Jong-Ho Paik and Dong-Ku Kim
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| 원문수록처(Citation) |
VOL 06 NO. 02 PP. 0702 ~ 0721 (2012. 02) |
한글내용
(Korean Abstract) |
|
영문내용
(English Abstract) |
In the DVB-T2 system with a multiple-input single-output (MISO) transmission mode, Alamouti coded orthogonal frequency division multiplexing (OFDM) signals are transmitted simultaneously from two spatially separated transmitters in a single frequency network (SFN). In such systems, each transmit-receive link may have a distinct carrier frequency offset (CFO) due to the Doppler shift and/or frequency mismatch between the local oscillators. Thus, the received signal experiences dual CFOs. This not only causes dual phase errors in desired data but also introduces inter-carrier interference (ICI), which cannot be removed completely by simply performing a CFO compensation. To overcome this problem, this paper proposes an iterative detection with dual phase errors compensation technique. In addition, we propose a successive-iterative ICI cancellation technique. This technique successively eliminates ICI in the initial iteration by exploiting pre-detected data pairs. Then, in subsequent iterations, it performs a fine interference cancellation using a priori information, iteratively fed back from the channel decoder. In contrast to previous works, the proposed techniques do not require estimates of dual CFOs. Their performances are evaluated via a full DVB-T2 simulator. Simulation results show that the DVB-T2 receiver equipped with the proposed dual phase errors compensation and the successive-iterative ICI cancellation techniques achieves almost the same performance as ideal dual CFOs-free systems, even for large dual CFOs. |
| 키워드(Keyword) |
DVB-T2
MISO
OFDM
carrier frequency offset.
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| 파일첨부 |
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