Exceptional performance gains may be made

Exceptional performance gains may be made by selecting the appropriate technology that is available to the industry (National Instruments, 2016). For example, a trend observed in both the automotive and military industries is to make use of commercial off-the-shelf (COTS) technology, repackaged to IP65 standards, as opposed to development of turnkey systems from the ground up.
This approach holds many advantages for industrial electronics and informatics practitioners because of time and cost savings related to the measurement platform. For the same reasons, the application of Android/Linux-based platforms has become prolific (National Instruments, 2016). These devices incorporate mostly 802.11a/g/n compatible WLAN capabilities, as well as multiple connectivity options. Their capabilities to connect dissimilar operating systems across dissimilar networks place them functionally on par with OSI model, level 7 gateways.
The latest commercial gateway/routers operate in both ISM frequency bands of 2.4GHz and 5.8GHz in the WLAN, so providing frequency diversity. Each frequency band is utilized by two omnidirectional transceivers, hence providing a degree of space diversity, as well as noise cancellation. The gateway employs a so-called ‘hotstick’ USB modem to connect the WLAN to the Internet service provider, typically in a licenced frequency band such as 3.8GHz.
However, a related problem is to define the degree to which the network can be improved in terms of its service level as a result of performance optimization attempted by the user (Akerberg, Gidlund, & Bjorkman, 2011; Bello, Mirabella, & Raucea, 2007; Sun, Akyildiz, & Hancke, 2011). Advantages for industrial electronics and informatics practitioners from this dna staining approach are time and cost savings related to the set-up and operation of the measurement platform.

Methods and test environment
The test topology is shown in Figure 1.1(a)–(c). The test range is shown in Figure 1.2. The typical OFDM test network consists of two mobile computers and an ISM 802.11.g access point (AP) router. The 802.11g system was used as an example because this system version (g) was already well developed in terms of industrial packaging and antennas/accessories available. We also used 802.11g as an example because of interest in the results obtained from single transceiver systems, as opposed to multiple transceivers as in MIMO operation. The fact of the matter is that the similar results will (predictably) be obtained when repeating these tests with any of the IEEE ratified systems 802.11a/g/n.
Figure 1.1 depicts the network options for testing. The server node used option (a) for Experiment 1, option (b) for Experiment 2 and option (c) for Experiment 3. Typical ISM band OFDM network variations were deployed for streaming video transmission. Performance results were measured and are presented here as connected bandwidth (BW) in Mbps, as a function of transmission range (r) in metres. The server node is directly connected to the AP via Cat 5 cable, and also controls the AP adapter settings with a browser-based guided user interface (GUI). For the mobile node\’s adapter, Intel PROSet Wireless adapter software is used with the mobile node because it is freely available and easy to use. The installation of this additional software enhances the functionality and user perception of the measurement experience.
Radiation measurements normally have to be conducted in an anechoic chamber or open-space antenna measurement range. Results otherwise obtained will be regarded as conduction measurements rather than radiation measurements, and are therefore not considered here.
Since the method described here is intended for actual field use and refers to the SINAD parameter (ratio of signal to noise and distortion), the results were required to include the effects introduced by external noise and distortion. The transmission tests were therefore conducted on an old cricket pitch, as shown in Figure 1.2, providing a relatively large open space with an evenly flat ground plane.