A Novel Practical CP Based Mismatched MMSE Equalization

Balevi E., YILMAZ A. Ö.

IEEE Wireless Communications and Networking Conference (WCNC), San-Francisco, Costa Rica, 19 - 22 March 2017 identifier

  • Publication Type: Conference Paper / Full Text
  • City: San-Francisco
  • Country: Costa Rica
  • Middle East Technical University Affiliated: Yes

Abstract

Faster than symbol rate (FTSR) sampling is necessary once practical non-adaptive analog front-end filter and excess bandwidth are employed in case of unequally spaced channel taps. Based on this a novel FTSR sampled mismatched minimum mean square error (MMSE) time domain equalization (TDE) is proposed in response to cyclic prefix (CP) based block transmissions. Our results show that the proposed MMSE TDE implementation nearly introduces 3dB signal-to-noise ratio (SNR) advantage with respect to conventional symbol rate (SR) sampled CP based MMSE single carrier frequency domain equalization (SC-FDE) for an error rate of 10-3 and 16-quadrature amplitude modulation (QAM).