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Self Estimation and Compensation scheme for IQ Imbalance of Direct Conversion Transceiver in OFDM system
Self Estimation and Compensation scheme for IQ Imbalance of Direct Conversion Transceiver in OFDM system
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机译:OFDM系统中直接转换收发器IQ失衡的自估计和补偿方案
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摘要
In an OFDM system according to an embodiment of the present invention, an IQ imbalance estimation and compensation method of a direct conversion transceiver includes an in-phase / quadrature-phase (I / Q) imbalance component using one orthogonal frequency division multiplexing (OFDM) symbol. estimating (ε tx , ε rx , θ tx , θ rx ) and distortion components α, β, γ, δ; Receiving the distortion components (α, β) and distorting the baseband transmission signal in a time domain after an Inverse Fast Fourier Transform (IFFT); And receiving the distortion components γ and δ to compensate for the distorted baseband received signal in a time domain before a Fast Fourier Transform (FFT).
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