Details

Autor(en) / Beteiligte

• Salih, Tedros
• Mwangi, Elijah
• Langat, Kibet
• Vyas, Nalinaksh
• Sanei, Saeid
• Deb, Kalyanmoy
• Fleming, Peter

Titel

Large Scale Fading Pre-coder for Massive MIMO Without Cell Cooperation

Ist Teil von

• Emerging Trends in Electrical, Electronic and Communications Engineering, p.239-251

Ort / Verlag

Cham: Springer International Publishing

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• In massive MIMO technology the channel is estimated using uplink training by sending an orthogonal pilot sequence from users to the base station. These sequences are re-used in the cell and also outside the cell. This gives rise to a channel estimation error referred to as pilot contamination. Large scale fading precoding which is based on the cooperation between cells has been proposed to mitigate pilot contamination. However this approach is known to limit in data transmission rate. In this paper, we propose a novel uplink training scheme to mitigate pilot contamination using a large scale fading precoding without the need of cooperation between cells. This achieves a higher transmission rate over existing method. The simulation results show that the proposed scheme improves 5% outage rate 10 times, over the existing method.