Transceiver Optimization for Unicast/Multicast MIMO Cognitive Overlay/Underlay Networks

Author

Gupta, Nikhil ; Jagannatham, Aditya K.

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Technol., Kanpur, Kanpur, India

Volume

22

Issue

10

fYear

2015

fDate

Oct. 2015

Firstpage

1556

Lastpage

1560

Abstract

In this work, we develop a majorization theory based linear precoding framework for optimal transceiver design in MIMO cognitive radio networks. Closed form expressions are derived for the optimal MIMO precoders using two new transceiver design paradigms, the zero-forcing transceiver (ZFT) and the interference optimized transceiver (IOT), for overlay and underlay MIMO cognitive radio networks respectively. Further, another novel contribution of this work is to derive the precoders for multicast MIMO cognitive radio scenarios based on novel multi-user mean-squared error (MSE) bounds. Simulation results demonstrate the performance of the proposed optimal MIMO transceivers.

Keywords

MIMO communication; cognitive radio; linear codes; mean square error methods; multicast communication; optimisation; overlay networks; precoding; radio transceivers; radiofrequency interference; IOT; MSE bound; ZFT; interference optimized transceiver; majorization theory based linear precoding; multicast MIMO cognitive radio overlay-underlay network; multiuser mean squared error bound; transceiver optimization; unicast MIMO cognitive radio overlay-underlay network; zero-forcing transceiver; Cognitive radio; Interference; MIMO; Optimization; Radio transmitters; Receivers; Transceivers; Cognitive radio; MIMO; transceiver optimization;

fLanguage

English

Journal_Title

Signal Processing Letters, IEEE

Publisher

ieee

ISSN

1070-9908

Type

jour

DOI

10.1109/LSP.2015.2413940

Filename

7061926