Local Oscillator Phase Noise Influence on Single Carrier and OFDM Modulations

Vitor Fialho (1, 2) , Fernando Fortes (2, 3) , Manuela Vieira (1, 2)

1 ULISBOA - Universidade de Lisboa = University of Lisbon
2 Instituto Superior de Engenharia de Lisboa – ISEL
3 Instituto das Telecomunicações

This paper describes the influence of local oscillator phase noise on single and multi-carrier modulations schemes. The oscillator has the main role on modulation and demodulation process of the radio frequency channels. The synchronization of the entire system depends on the accuracy of this circuit. This work is based on the simulation of these two scenarios under influence of a non-ideal oscillator. The output of the simulation scenario results of error vector magnitude, bit error rate and symbol error rate. The relation of these metrics with the local oscillator phase noise allows the performance estimation the global system. A simple phase noise model is presented with configurable power spectral density and offset frequency.

Mots clés: phase noise; radio frequency transceiver; error vector magnitude

Domaines: Informatique [cs]

Vitor Fialho, Fernando Fortes, Manuela Vieira. Local Oscillator Phase Noise Influence on Single Carrier and OFDM Modulations. 4th Doctoral Conference on Computing, Electrical and Industrial Systems (DoCEIS), Apr 2013, Costa de Caparica, Portugal. pp.513-520, ⟨10.1007/978-3-642-37291-9_55⟩. ⟨hal-01348797⟩