Publications

In this paper, we investigate pilot allocation problem in two-tier time division duplex (TDD) heterogeneous network (HetNet) with mMIMO.

Pilot contamination due to the pilot reuse in adjacent cells is a very serious problem in time-division duplex (TDD) based massive multi-input multiple-output (MIMO) system.

We analyze the effects of pilot assisted channel estimation on achievable data rates (lower bound on information capacity) over a frequency at time-varying channel.

This paper considers a multi-cell multiple antenna system with precoding at the base stations for downlink transmission.

This paper considers a multi-cell multiple antenna system with precoding used at the base stations for downlink transmission.

This paper considers the pilot contamination problem in multi-cell massive MIMO systems.

Massive MIMO provides great improvements in spectral efficiency, by coherent combining over a large antenna array and by spatial multiplexing of many users.

Massive MIMO (multiple-input multiple-output) provides great improvements in spectral efficiency over legacy cellular networks, by coherent combining of the signals over a large antenna array and b

This talk is to uplink communication in multi-cell multi-user LSASs (massive MIMO wireless system). We proposed a new approach for a limited cooperation between base stations in the network.

A large scale antenna system (LSAS) entails a large number of base station (BS) antennas serving a much smaller number of terminals.