Abstract
In this letter, at first, a low complexity block diagonalized vector perturbation (BD-VP) algorithm is proposed for multiuser MIMO downlink, which is based on our proved proposition on the relationship between the right inverse of the stacked channel matrix of all users and the channel matrix of each user. With the proposed algorithm, we show that although flexible in adaptive modulation (AM) for different users, the BD-VP algorithm is suboptimal in minimizing the total transmit power. To achieve the flexibility and performance (diversity gain and achievable sum rate) tradeoff, we further develop a low complexity user grouping vector perturbation (UG-VP) algorithm. Analysis and simulation results validate the proposed algorithms.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
