In this paper we introduce an improved version of the Turbo Layered ORthogonal lattice Detector (T-LORD), recently presented. This implementation, namely K-Best T-LORD, misses the performance of the turbo MAP detector by only few tenths of dB in various configurations, like the Fully Enhanced T-LORD. However, its complexity is quadratic in the number of transmitting antennas instead of exponential. Moreover, we show that the K-Best T-LORD is robust also over realistic channels, with correlation between tones and antennas, and with imperfect Channel State Information at the receiver. This behavior is shown not only via Monte Carlo simulations, but also with EXIT chart analysis.

A K-Best version of the Turbo-LORD MIMO Detector in Realistic Settings

TOMASONI, ALESSANDRO;BELLINI, SANDRO
2009-01-01

Abstract

In this paper we introduce an improved version of the Turbo Layered ORthogonal lattice Detector (T-LORD), recently presented. This implementation, namely K-Best T-LORD, misses the performance of the turbo MAP detector by only few tenths of dB in various configurations, like the Fully Enhanced T-LORD. However, its complexity is quadratic in the number of transmitting antennas instead of exponential. Moreover, we show that the K-Best T-LORD is robust also over realistic channels, with correlation between tones and antennas, and with imperfect Channel State Information at the receiver. This behavior is shown not only via Monte Carlo simulations, but also with EXIT chart analysis.
2009
MIMO; Space-Frequency BICM; OFDM; MAP; turbo detection; BCJR; EXIT.
File in questo prodotto:
File Dimensione Formato  
K-Best_Turbo_LORD.pdf

Accesso riservato

: Altro materiale allegato
Dimensione 162.43 kB
Formato Adobe PDF
162.43 kB Adobe PDF   Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/566063
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact