Version 1
: Received: 23 June 2019 / Approved: 25 June 2019 / Online: 25 June 2019 (08:43:15 CEST)
How to cite:
Pereira de Figueiredo, F.A. Mitigating Pilot Contamination with Scrambling Sequences. Preprints2019, 2019060247. https://doi.org/10.20944/preprints201906.0247.v1
Pereira de Figueiredo, F.A. Mitigating Pilot Contamination with Scrambling Sequences. Preprints 2019, 2019060247. https://doi.org/10.20944/preprints201906.0247.v1
Pereira de Figueiredo, F.A. Mitigating Pilot Contamination with Scrambling Sequences. Preprints2019, 2019060247. https://doi.org/10.20944/preprints201906.0247.v1
APA Style
Pereira de Figueiredo, F.A. (2019). Mitigating Pilot Contamination with Scrambling Sequences. Preprints. https://doi.org/10.20944/preprints201906.0247.v1
Chicago/Turabian Style
Pereira de Figueiredo, F.A. 2019 "Mitigating Pilot Contamination with Scrambling Sequences" Preprints. https://doi.org/10.20944/preprints201906.0247.v1
Abstract
In this letter, we advocate that it is possible to mitigate Pilot Contamination in Massive MIMO systems by scrambling the pilot sequences with a Base Station (BS) scrambling sequence. It is possible if a set of sequences is carefully designed to meet the orthogonality property defined in this letter. Each BS possesses its own scrambling sequence that can be reused the same way frequency reuse is applied to cell deployment. The main advantage of the prosed pilot generation scheme is that the frequency reuse factor can be set to 1, the most aggressive one, while the scrambling sequences can be reused with much less aggressive reuse factors (e.g. 4, 7, 9, 12, etc.), which in consequence results in pilot contamination mitigation and increased system's performance.
Keywords
massive MIMO; pilot contamination; scrambling
Subject
Engineering, Telecommunications
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
