Optimal precoder designs for sum rate maximization in MIMO multiuser multicells
نویسندگان
چکیده
منابع مشابه
Optimal Linear Precoder for Multiuser MIMO for Discrete Alphabets
Abstract—In this paper we study the effect of discrete constellation alphabets on linear precoding for the downlink of multiuser (MU) MIMO. We underline the fundamental difference in the approach of precoding if the alphabets are assumed to be discrete constellations rather than the idealized Gaussian assumption. We derive the optimal linear precoder by maximizing the sum rate taking into accou...
متن کاملImproved and weighted sum rate maximization for successive zero-forcing in multiuser MIMO systems
We propose an improved algorithm for optimizing the transmit covariance matrices for successive zero-forcing (SZF) precoding in multiple-input multiple-output systems. We use a conjugate gradient projection method to solve the optimization problem. Our algorithm improves upon the existing method twofold. First, the existing covariance optimization method, with higher SNRs or more simultaneously...
متن کاملSum Rate Maximization using Linear Precoding and Decoding in the Multiuser MIMO Downlink
We propose an algorithm to maximize the instantaneous sum data rate transmitted by a base station in the downlink of a multiuser multiple-input, multiple-output system. The transmitter and the receivers may each be equipped with multiple antennas and each user may receive more than one data stream. We show that maximizing the sum rate is closely linked to minimizing the product of mean squared ...
متن کاملConvex Approximated Weighted Sum-Rate Maximization for Multicell Multiuser OFDM
This letter considers the weighted sum-rate maximization (WSRMax) problem in downlink multicell multiuser orthogonal frequency-division multiplexing system. The WSRMax problem under per base station transmit power constraint is known to be NP-hard, and the optimal solution is computationally very expensive. We propose two lesscomplex suboptimal convex approximated solutions which are based on s...
متن کاملMIMO Broadcast Scheduling for Weighted Sum-rate Maximization
Multiple-Input-Multiple-Output (MIMO) is one of the most important communication techniques that allow wireless systems to achieve higher data rate. To overcome the practical difficulties in implementing Dirty Paper Coding (DPC), various suboptimal MIMO Broadcast (MIMO-BC) scheduling algorithms are employed which choose the best set of users among all the users. In this paper we discuss such a ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Science and Technology Development Journal
سال: 2015
ISSN: 1859-0128,1859-0128
DOI: 10.32508/stdj.v18i3.890