An interference self-cancellation technique for SC-FDMA systems

Author

Ma, Meng ; Huang, Xiaojing ; Guo, Y. Jay

Author_Institution

Sch. of Electron. Eng. & Comput. Sci., Peking Univ., Beijing, China

Volume

14

Issue

6

fYear

2010

fDate

6/1/2010 12:00:00 AM

Firstpage

512

Lastpage

514

Abstract

A new interference self-cancellation (ISC) method for Single Carrier-FDMA (SC-FDMA) systems is proposed to mitigate the inter-user interference caused by frequency offset or Doppler effect. By transmitting a compensation symbol at the first symbol location in each resource block, the energy leakage can be significantly suppressed. With little bandwidth and power sacrifice, the proposed method can greatly improve the system robustness against frequency offset. Simulation results show that the signal-to-interference ratio (SIR) can be improved by 7 dB on average for the entire system band, and up to 11.7 dB for an individual user.

Keywords

Doppler effect; frequency division multiple access; interference suppression; Doppler effect; ISC method; SC-FDMA Systems; SIR; energy leakage; frequency offset; interference selfcancellation technique; power sacrifice; signal-to-interference ratio; single carrier-FDMA systems; Australia; Bandwidth; Doppler effect; Frequency conversion; Frequency synchronization; Interference suppression; OFDM; Peak to average power ratio; Resource management; Robustness; Doppler effect, modulation; interference suppression;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2010.06.091300

Filename

5474927