Details

Autor(en) / Beteiligte

• Fang, Xin
• Zhang, Jianfeng
• Cao, Haiyan
• Liu, Chao
• Pan, Peng

Titel

Dynamic Pilot Allocation in Massive MIMO System

Ist Teil von

• Dian zi yu xin xi xue bao = Journal of electronics & information technology, 2016-08, Vol.38 (8), p.1901-1907

Erscheinungsjahr

2016

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• A dynamic pilot allocation scheme is proposed in case of the pilot contamination existing in massive MIMO system. Based on the signal to interference difference between the aim cell user and the interference cell user, the interference cell is divided into U sub(in) and U sub(out). Specifically, in order to improve the average downlink achievable sum rates, the users in the U sub(in) are operated with the optimal pilot allocation, and the users in the U sub(out) are operated with the random pilot allocation. Simultaneously, the proposed pilot allocation scheme is further optimized with an extral set of orthogonal pilots. Simulation results show that the proposed dynamic pilot allocation scheme can enhance the downlink performance of the massive MIMO system effectively.