Fig. 14 SD of FR estimation error, amplitude an phase estimation errors of channel imbalance and cross-talks for Scheme 5 as a function of SNR, under the conditions of no APN error (i.e. = 0), and |f | = 1.5, arg{f} = /3, |1| = |2 | = 0.1, |c| = 0.32, arg{1} = arg{2} = arg{c}= 0, = /4. (a) FR estimation error; (b) amplitude errors of channel imbalance and cross-talks; (c) phase errors of channel imbalance and cross-talks.
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