Fractionally spaced linear and DF Mimo equalizers for multitone systems without guard time
(1997) Annales des Télécommunications — Vol. 52, n° 1-2, p. 21-30 (1997)
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- Abstract
- When OFDM or multitone modulation is used, the dispersiveness of the channel is usually circumvented by means of the technique of guard time. As an alternative it is possible not to use a guard time but design receivers able to equalize the ISI and ICI. In the present paper we show how to design functionally spaced linear or decision-feedback Mimo equalizers for multitone systems without guard rime. Full complexity and reduced complexity solutions are investigated. The design is made for an MMSE criterion and the steady-state performance is analysed. It is shown that Mimo equalization outperforms the technique of guard time, that fractionally spaced devices are very effective and the complexity reduction produces a performance degradation which is negligible compared to full complexity fractionally spaced devices, especially when the processing rate is larger than the symbol rate.
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Vandendorpe, L. (1997). Fractionally spaced linear and DF Mimo equalizers for multitone systems without guard time. Annales des Télécommunications, 52(1-2), 21-30. https://hdl.handle.net/2078.5/143088 (Original work published 1997)