Analysis and Design of Distributed MIMO Networks with a Wireless Fronthaul

by   Hussein A. Ammar, et al.

We consider the analysis and design of distributed wireless networks wherein remote radio heads (RRHs) coordinate transmissions to serve multiple users on the same resource block (RB). Specifically, we analyze two possible multiple-input multiple-output wireless fronthaul solutions: multicast and zero forcing (ZF) beamforming. We develop a statistical model for the fronthaul rate and, coupled with an analysis of the user access rate, we optimize the placement of the RRHs. This model allows us to formulate the location optimization problem with a statistical constraint on fronthaul outage. Our results are cautionary, showing that the fronthaul requires considerable bandwidth to enable joint service to users. This requirement can be relaxed by serving a low number of users on the same RB. Additionally, we show that, with a fixed number of antennas, for the multicast fronthaul, it is prudent to concentrate these antennas on a few RRHs. However, for the ZF beamforming fronthaul, it is better to distribute the antennas on more RRHs. For the parameters chosen, using a ZF beamforming fronthaul improves the typical access rate by approximately 8 the effect of these fronthaul solutions and provides an effective tool for the design of distributed networks.


page 26

page 28


Optimizing RRH Placement Under a Noise-Limited Point-to-Point Wireless Backhaul

In this paper, we study the deployment decisions and location optimizati...

QoE-Aware Beamforming Design for Massive MIMO Heterogeneous Networks

One of the main goals of the future wireless networks is improving the u...

Massive MIMO Multicast Beamforming Via Accelerated Random Coordinate Descent

One key feature of massive multiple-input multiple-output systems is the...

Optimal User Load and Energy Efficiency in User-Centric Cell-Free Wireless Networks

Cell-free massive MIMO is a variant of multiuser MIMO and massive MIMO, ...

Optimal Bandwidth Allocation for Multicast-Cache-Aided on-Demand Streaming in Wireless Networks

We consider a hybrid delivery scheme for streaming content, combining ca...

Beamforming Design in Multiple-Input-Multiple-Output Symbiotic Radio Backscatter Systems

Symbiotic radio (SR) backscatter systems are possible techniques for the...

Rate-Splitting for Multigroup Multicast Beamforming in Multicarrier Systems

In this paper, we consider multigroup multicast transmissions with diffe...