Title :
SC-FDMA Performance in Presence of Oscillator Impairments: EVM and Subcarrier Mapping Impact
Author :
Gomaa, Ahmad ; Al-Dhahir, Naofal
Author_Institution :
Univ. of Texas at Dallas, Dallas, TX, USA
Abstract :
We derive an analytical expression for the error vector magnitude under carrier frequency offset (CFO) and joint transmit-receive phase noise (PN). CFO and PN are major oscillator impairments in direct-conversion transceivers. As a case study, we consider multi-user uplink transmission with single- carrier frequency-division-multiple access as in the long-term evolution standard. The derived expression reveals an interesting relationship between the subcarrier mapping scheme and the immunity to CFO and PN. Furthermore, we verify the accuracy of our derived expression through Monte-Carlo simulations for various CFO and PN levels.
Keywords :
Monte Carlo methods; frequency division multiple access; oscillators; phase noise; radio transceivers; vectors; CFO; EVM; Monte-Carlo simulation; SC-FDMA performance; carrier frequency offset; direct-conversion transceiver; error vector magnitude; joint transmit-receive PN; joint transmit-receive phase noise; long-term evolution standard; multiuser uplink transmission; oscillator impairment; single-carrier frequency-division-multiple access performance; subcarrier mapping scheme; Joints; OFDM; Phase noise; Radio frequency; Signal to noise ratio; Vectors;
Conference_Titel :
Global Telecommunications Conference (GLOBECOM 2011), 2011 IEEE
Conference_Location :
Houston, TX, USA
Print_ISBN :
978-1-4244-9266-4
Electronic_ISBN :
1930-529X
DOI :
10.1109/GLOCOM.2011.6133544