Abstract
We propose a two-stage channel estimation technique for high rate ultra-wideband communication system. In the preamble-stage, we perform initial channel estimation using least square approach followed by frequency-domain smoothing operation. Estimated channel at this stage is then windowed by a rectangular window of Hannan-Quinn criteria-optimized length. In the payload-stage, estimated channel from the previous stage is further refined by applying time- and frequency-redundancy in a decision-directed manner followed by smoothing and windowing. Link level simulation shows that the two-stage method with optimized windowing provides a good estimation performance close to that of the minimum-mean-square-estimation (MMSE) scheme with significant reduction in computational cost.
Original language | English |
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Article number | 7327173 |
Pages (from-to) | 272-275 |
Number of pages | 4 |
Journal | IEEE Communications Letters |
Volume | 20 |
Issue number | 2 |
Early online date | 11 Nov 2015 |
DOIs | |
Publication status | Published - 12 Feb 2016 |
Externally published | Yes |