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Table 2 Complexity comparison of the suggested DFT-based cell ID estimator with [12–14], in a number of complex multiplications

From: DFT-based low-complexity optimal cell ID estimation in NB-IoT

 

Cell ID

Channel

Exhaustive ML [12]

266112

N/A

[13]

66528

N/A

[14]

16632

N/A

Suggested ML

<73856(1)

4032

  1. Notes: (1) This value is a loose upper bound of the achievable complexity. Such as aforementioned, this could be reduced by 8, namely 9232