Hybrid MIMO Receiver Using QR-MLD and QR-MMSE

This paper proposes a new hybrid structure for the practical MIMO receiver. The receiver operates in a QRMLD mode by default and achieves near-optimal performance. On the other hand, when the communication environment is not so favorable for a QR-MLD, it switches to a QR-MMSE mode and saves the mobile computing power. Using a common structure of QR decomposition from both receivers and the novel QR-MMSE un-biasing technique, this hybrid receiver can be implemented with great simplicity.

[1]  K. Kammeyer,et al.  Efficient algorithm for decoding layered space-time codes , 2001 .

[2]  U. Fincke,et al.  Improved methods for calculating vectors of short length in a lattice , 1985 .

[3]  Reinaldo A. Valenzuela,et al.  V-BLAST: an architecture for realizing very high data rates over the rich-scattering wireless channel , 1998, 1998 URSI International Symposium on Signals, Systems, and Electronics. Conference Proceedings (Cat. No.98EX167).

[4]  K.-D. Kammeyer,et al.  MMSE extension of V-BLAST based on sorted QR decomposition , 2003, 2003 IEEE 58th Vehicular Technology Conference. VTC 2003-Fall (IEEE Cat. No.03CH37484).