Title :
A frequency error resistant blind CDMA detector
Author :
Romero-García, Javier ; De Gaudenzi, Riccardo ; Giannetti, Filippo ; Luise, Marco
Author_Institution :
European Space Agency, Eur. Space Res. & Technol. Centre, Noordwijk, Netherlands
fDate :
7/1/2000 12:00:00 AM
Abstract :
This paper presents an enhanced version of the previously proposed blind anchored interference-mitigating detector (BAID) for code-division multiple-access transmission. Such a detector, named extended complex BAID (EC-BAID), features invariance to a phase error on the useful channel´s carrier and reveals resistance to a large frequency shift (e.g., Doppler shift) on interfering carriers. The EC-BAID is also shown to bear a sensitivity to residual carrier frequency errors on the desired channel which is lower by three orders of magnitude with respect to the case of a data-aided minimum mean-square-error receiver. The performance of the EC-BAID is computed theoretically, and is validated by computer simulations under a variety of system configurations
Keywords :
Doppler shift; code division multiple access; multiuser channels; radiofrequency interference; signal detection; spread spectrum communication; DS-CDMA; DS-SS; Doppler shift; EC-BAID; blind anchored interference-mitigating detector; channel carrier; code-division multiple-access transmission; computer simulations; data-aided minimum mean-square-error receiver; extended complex BAID; frequency error resistant blind CDMA detector; interfering carriers; large frequency shift; multiaccess interference; performance; phase error invariance; residual carrier frequency errors; system configurations; Bit error rate; Doppler shift; Fading; Multiaccess communication; Multiple access interference; Phase detection; Phase frequency detector; Space technology; Spread spectrum communication; Timing;
Journal_Title :
Communications, IEEE Transactions on
