A Novel Narrowband Internet Of Things NPUSCH Format 2 Receiver

Abstract

In this study, we propose a new Narrowband IoT (NB-IoT) receiver design for NPUSCH Format 2, which is equivalent to the Minimum Mean Square Error (MMSE) receiver mathematically. The proposed design changes the scrambling operation, and replaces the hard decoding of BPSK modulation symbols with soft decision decoding. This method outperforms the BER performance of the standard receiver model that utilizes hard decision decoding.