Wireless Communications

The demand of personal mobile device and connected objects for Internet access has been increasing day after day. In this scenario, the CPQD Wireless Communications platform provides broadband access with geographic coverage greater than 50 km and offers narrow band technology for low power consumption applications. By providing widespread connectivity, which enables device flexibility and mobility, CPQD has contributed to the dynamic evolution of the infrastructure and to the concept of Internet of Things (IoT).

This technology platform includes technologies that are directly associated and have a great impact on the performance and operation of wireless communication systems.

The main competencies of the Wireless Communications platform include:

Long Range Mobile Networks

Includes wireless network technologies based on 3GPP (Third Generation Partnership Project), IEEE 802.16 standards and legacy technologies (2G). Enabling technologies of 5G (fifth mobile generation) are included.
Examples include WiMAX and 3G technologies: HSDPA (High-Speed Downlink Packet Access) and W-CDMA (WideBand CDMA), LTE, 4G (LTE-A).

Wireless Local Area Networks

Wireless technology networks covering distances of less than 100 meters, also known as WLAN, compliant with protocols defined on IEEE 802.11 standard, for example, Wi-Fi.

Specialized Radio Systems

Wireless communication systems for specialized applications, which are developed to meet specific niche demands. Examples are the software-defined radio, which allows waveforms to be changed with no need to update hardware, and cognitive radios.

RF Antennas and Devices

Technologies used in the development of RF devices and transceivers and antennas for wireless communication systems. Examples include power amplifiers, linearizers, frequency converters, antenna networks and smart antennas.

Things-to-things Wireless Communication

Network technologies for things-to-things wireless communication, characterized by low power consumption, low cost, narrow band, and devices with reduced dimensions, and a coverage similar to that of metropolitan networks.

The main focus of these technologies are M2M/IoT applications. They include LPWAN (Low Power Wide Area Network) communication systems, such as LoRaWan and SigFox; WPAN (Wireless Personal Area Network) technologies, such as Bluetooth-Low Energy, Z-WAVE, ZigBee; the NFC (Near-Field Communication) protocol; 6LowPan, mesh networks based on 802.15.4 standard; and NB-IoT, 3GPP compliant cell communications for IoT applications; among others.

Broadcasting Systems

Radio technology for the wireless transmission of data in broadcasting mode, based on broadcasting standards. For example: DVB (Digital Video Broadcasting).

Planning and Optimization of Wireless Systems

Techniques and methods applied for planning and optimizing wireless communication systems in need of deployment or modification, in order to optimize resources and meet quality of service (QoS) demands, to ensure availability and reliability, and improve user quality of experience (QoE), while at the same time complying with all existing rules and regulations.

Test Systems of Wireless Communication

Technologies that allow compliance testing and development of wireless communication systems, as well as evaluate performance in different scenarios.