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                <term xml:lang="en">delay filters</term>
                <term xml:lang="en">PAPR reduction</term>
                <term xml:lang="en">digital BF</term>
                <term xml:lang="en">high-precision beam-steering</term>
                <term xml:lang="en">delayed signals</term>
                <term xml:lang="en">tone-reservation PAPR reduction</term>
                <term xml:lang="en">millimetre wave communication</term>
                <term xml:lang="en">millimetre wave power amplifiers</term>
                <term xml:lang="en">computational complexity</term>
                <term xml:lang="en">frequency-domain BF</term>
                <term xml:lang="en">MIMO communication</term>
                <term xml:lang="en">OFDM modulation</term>
                <term xml:lang="en">FIR filters</term>
                <term xml:lang="en">array signal processing</term>
                <term xml:lang="en">interpolation</term>
                <term xml:lang="en">polynomials</term>
                <term xml:lang="en">time-domain transmit beam-steering</term>
                <term xml:lang="en">energy efficiency</term>
                <term xml:lang="en">massive MIMO</term>
                <term xml:lang="en">joint digital beam-steering</term>
                <term xml:lang="en">peak-to-average power ratio reduction</term>
                <term xml:lang="en">digital beamforming</term>
                <term xml:lang="en">mm-wave massive multiple-input multiple-output systems</term>
                <term xml:lang="en">power amplifiers</term>
                <term xml:lang="en">system power efficiency</term>
                <term xml:lang="en">millimetre wave antenna arrays</term>
                <term xml:lang="en">progressive time delays</term>
                <term xml:lang="en">amplitude weights</term>
                <term xml:lang="en">finite impulse response filter implementation</term>
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