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The analytical expressions to obtain the channel impulse response from the training symbol are also derived.
We demonstrate that by imposing a whole-sample symmetry condition in the training symbol, the channel impulse response can be estimated in a straightforward way.
Orthogonal training symbol set is used.
Here superscript represents the training symbol number.
Alternatively, a Onlytap FEQ coneficientraining applied for the direct esymbolisneededransmitoed symbol, ginitialize8).
Only one training symbol is required to reestimate.
Note that if the training symbol satisfies the condition (A.7). it follows that (A.8).
FinAgain in the case onlyI receiver IQ imbalance, we can average the oner all trainingsymbolbtais aneededoved estomatestimate
where b1(i) and b ¯ 1 ( i ) in (9) are the training symbol sequences.
Similar(2)
Both training symbol-based and blind CFO estimators have been proposed in the literature [1 5].
The pilot separation can range from 1 (particular case where all subcarriers in the OFDM symbol are dedicated to transmit pilots training symbol) to, fulfilling the condition.
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