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arXiv 0809.4985cs.NI
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MIMO-OFDM系统载波频偏和采样频偏对未来数字TV的影响

On the Influence of Carrier Frequency Offset and Sampling Frequency Offset in MIMO-OFDM Systems for Future Digital TV

Youssef Nasser, Jean-François Hélard, Matthieu Crussière

摘要:

研究了载波频偏和采样频偏对下一代地面数字电视中不同高频谱效率MIMO-OFDM方案性能的影响。重点分析了正交Alamanti码和非正交(NO)码,如VBLAST码、线性色散(LD)码和Golden码。该分析给出了一个最适合的MIMO-OFDM方案的CFO和SFO的全局视图。我们发现,对于高频谱效率,Alamanti是更敏感的CFO和SFO。此外,我们表明,所有研究的MIMO-OFDM方案是敏感的CFO时,它是大于1%的载波间间隔。它们对SFO的敏感性小于对CFO的敏感性。

英文摘要:

This paper investigates the impact of carrier frequency offset (CFO) and sampling frequency offset (SFO) on the performance of different MIMO-OFDM schemes with high spectral efficiency for next generation of terrestrial digital TV. We analyze particularly orthogonal Alamouti scheme, and non-orthogonal (NO) schemes like VBLAST, linear dispersion (LD) code and Golden code. This analysis gives a global view on the best suitable MIMO-OFDM scheme with respect to CFO and SFO. We show that for high spectral efficiency, Alamouti is more sensitive to CFO and SFO. Moreover, we show that all studied MIMO-OFDM schemes are sensitive to CFO when it is greater than 1% of inter-carrier spacing. Their sensitivity due to SFO is less than that due to CFO.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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