Precoding and Scheduling for AoI Minimization in MIMO Broadcast Channels

Limited Feedback Precoding for Wireless MIMO Broadcast Channels

Recently, a number of techniques have been introduced to exploit multiuser diversity of a wireless multiple-input multiple-output (MIMO) broadcast channel (BC) that consists of a base station (BS) with t transmit antennas and K mobile stations (MS) with multiple antennas. However, prior works have ignored the rate overhead associated with feedback of MIMO BC channel state information (CSI), whi...

Precoding and Scheduling Techniques for Increasing Capacity of MIMO Channels

Even-Integer Interference Precoding for Broadcast Channels

In this paper, an improved precoding strategy for broadcast channels, i.e., the transmission from one central transmitter (e.g., base station) to a number of distributed receivers (e.g., mobile terminals), is presented. The new scheme is a generalization of Tomlinson-Harashima precoding applied to multiple-input/multiple-output (MIMO) channels and a translation of concepts from lattice-reductio...

QoS - Guaranteed Multiuser Scheduling in MIMO Broadcast Channels

© 2009 Seung Hwan Lee et al. 481 This paper proposes a new multiuser scheduling algorithm that can simultaneously support a variety of different quality-of-service (QoS) user groups while satisfying fairness among users in the same QoS group in MIMO broadcast channels. Toward this goal, the proposed algorithm consists of two parts: a QoS-aware fair (QF) scheduling within a QoS group and an ante...

Linear Precoding in Parallel MIMO Broadcast Channels: Separable and Inseparable Scenarios

Parallel multiple-input multiple-output (MIMO) broadcast channels are separable from an information theoretic point of view, i.e., the whole capacity region can be achieved with strategies that perform independent encoding and decoding on each carrier subject to a power allocation across carriers. However, recent research has revealed that such a separate transmission can become suboptimal if t...