Interpreting the Total Isotropic Sensitivity and Diversity Gain of LTE-enabled wireless devices from Over The Air Throughput Measurements in Reverberation Chambers
Artikel i vetenskaplig tidskrift, 2015

The characterization of the performance of wireless devices is the key to developing new RF products conforming to the latest communications protocols. Traditionally, communication performance tests have focused on the RF performance of the tested devices, e.g., smart phones, pads, laptops, etc. More specifically, the focus has shifted from conducted (i.e., cabled) measurements to more realistic Over-The-Air (OTA) characterization of the RF performance of these devices in transmit or receive mode. For example, the receiver performance of 2G and 3G wireless devices can be measured in terms of the total isotropic sensitivity (TIS) that depends on the antenna and the receiver parts of a wireless device. These measurements can be performed in a reverberation chamber setup. However, standard TIS measurements can be time consuming and do not reflect the actual performance gains of Multiple-Input Multiple- Output (MIMO) antenna systems operating over Orthogonal Frequency Division Multiplexing (OFDM) channels, such as those encountered in 4G Long Term Evolution (LTE) systems. Therefore, in order to meet both time and cost efficiency requirements, we propose here a new method to determine the TIS, as well as the diversity performance, of an LTE device based on throughput measurements. The proposed method shows that the TIS of an LTE device is characterized much faster directly from OTA throughput measurements than from standard TIS measurements and with excellent accuracy.

MIMO

LTE

OTA

OFDM

reverberation chamber

TIS

throughput

Författare

Ahmed Hussain

Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner, Antennsystem

Per-Simon Kildal

Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner, Antennsystem

Andres Alayon Glazunov

Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner, Antennsystem

IEEE Access

2169-3536 (ISSN)

Vol. 3 131-145 7056526

Styrkeområden

Informations- och kommunikationsteknik

Ämneskategorier

Elektroteknik och elektronik

DOI

10.1109/ACCESS.2015.2411393