Work

Random vs Structured Pilot Assignment in Cell-Free Massive MIMO Wireless Networks

Year: 2018

Type: conference-paper

Abstract: This paper addresses the performance improvement that structured pilot assignment policies can bring about, relative to a random pilot assignment, in cell-free massive MIMO wireless networks. It is shown that structured policies can deliver a multiple-fold reduction in the pilot overhead required to keep pilot contamination at some acceptably low level. While the implementation of the structured policies considered in the paper might require some degree of centralized control, their performance also captures what distributed nonrandom pilot assignment schemes (e.g., greedy or collision- detecting algorithms) can hope to approach.

Source: IEEE International Conference on Communications workshops

DOI: 10.1109/iccw.2018.8403508

Authors: Masoud Attarifar, Aliazam Abbasfar, Angel Lozano

Institutions: University of Tehran, Universitat Pompeu Fabra

Language: English

Topic: Advanced MIMO Systems Optimization

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funders: Horizon 2020 Framework Programme, H2020 European Research Council

Awards: Post-Cellular Wireless Networks, G91231167