|
|
| |
| Performance Analysis of Correlated Channel Capacity for Large Scale Multiple Input Multiple Output System
Download PDF
|
Nnaji, Genevieve Ada, Nwabueze, Christopher A., Muoghalu, Chidiebere N.
|
Abstract:
Large scale multiple antenna system is regarded as an important technique to achieve the high data rate requirements in 5G and future generation wireless communication networks for efficient multimedia application. The majority of the research carried out regarding maximising channel capacity in wireless network data transmission for multimedia application have considered conventional multiple-input multiple-output (MIMO) system and in cases where large scale MIMO have been considered, it has been assumed that the channels are uncorrelated. But, this is ideal scenario and it is not realistic valid. Hence, this work attempted to maximize the channel capacity of wireless communication networks for multimedia application by extending a conventional MIMO channel model to implement large scale multiple antenna system when the channels are correlated and the base station (BS) and mobile station (MS) employ different antenna arrangements. This paper considered the analysis of MIMO system in terms of data transmission when the channel is correlated. Three main parameters of interest for the correlated channels are the signal power expressed in terms of signal to noise ratio (SNR) in dB, the spacing between antennas, and the number of antennas. Simulation analysis was performed in terms of ergodic capacity (uncorrelated) and correlated ergodic capacity including the bit error rate (BER) performance of the correlated channel when different MS transmits to BS. In order to further study and validate the capacity performance of the proposed system employing massive multiple antenna arrays considering a more realistic channel scenario, correlation was taken into account and the capacity of system was observed for, say M = N = 20, the capacity was 172.4 bps/Hz for uncorrelated channel and 111 bps/Hz for correlated capacity. However, the ergodic capacity of correlated channel provides more realistic scenario about the channel than uncorrelated channel. Generally, simulation results have shown that near optimal performance can be achieved for channel capacity in wireless network data transmission for multimedia application by increasing the number of antennas even in correlated channel scenario.
|
|
|
| | |