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Frequency-Domain Channel Estimation and Equalization for Continuous-Phase Modulations With Superimposed Pilot Sequences

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3 Author(s)
Cheol Hee Park ; Dept. of Electr. & Comput. of Eng., Univ. of Texas at Austin, Austin, TX, USA ; Heath, R.W. ; Rappaport, T.S.

This paper proposes a new frequency-domain channel-estimation and equalization method for continuous-phase modulation (CPM) block transmissions with superimposed pilot signals. Our method provides spectral and power-efficient broadband CPM wireless communications with less complexity than previous methods. The proposed frequency-domain channel estimation uses the superimposed pilot sequence as a reference signal to reduce the throughput loss caused by traditionally multiplexed pilots. The proposed CPM frequency-domain decision feedback equalizer (DFE) eliminates the complexity overhead of conventional decomposition-based CPM receivers.

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Vehicular Technology, IEEE Transactions on  (Volume:58 ,  Issue: 9 )