Data rate and bit error probability in Narrowband PLC systems: OCDM versus HS-OFDM

Túlio F. Moreira, Ândrei Camponogara, Sobia Baig, Moises Vidal Ribeiro

DOI: 10.14209/sbrt.2021.1570724204

Evento: XXXIX Simpósio Brasileiro de Telecomunicações e Processamento de Sinais (SBrT2021)

Keywords: Power Line Communication Orthogonal chirp division multiplexing Orthogonal frequency division multiplexing

Abstract

This study proposes a performance comparison between the orthogonal chirp division multiplexing (OCDM) and Hermitian symmetric orthogonal frequency division multiplexing (HS-OFDM) schemes in terms of data rate and bit error probability in the context of narrowband power line communication (PLC) systems. To analyze data rate of various power allocation techniques, we consider optimal, sub-optimal, and uniform power allocation techniques. Numerical results show that the OCDM eventually outperforms the HS-OFDM in terms of bit error probability when uniform power allocation applies and the HS-OFDM normalized signal to noise ratio is frequency selective. In contrast, the OCDM offers the lowest data rate performance when all the chosen power allocation techniques are considered. Thus, the OCDM can be more appropriate for low-bit-rate PLC systems when channel state information is not available at the transmitter side and fixed digital constellation is applied.

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