Frequency-dependent iq imbalance estimation
作者： Leif Wilhelmsson , Lars Sundström , Chester Park
DOI:
关键词:
摘要: RF impairment parameters, including frequency-dependent IQ imbalance, are estimated in a wideband received signal on per-sub-band (or per sub-band pair) basis. In one embodiment, block-type pilot signals received, such as SCH, and imbalance carrier frequency offset from the signals. The may be only sub-band. Data comb-type then all sub-bands. Phase noise channel coefficients for first sub-band, based estimates. is successively estimated, basis, signals, previously estimate, phase estimates prior sub-bands pairs). This comprise iterative estimation decision feedback.
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