Blogs

Understanding the Relay Node Concept in LTE

Understanding the Relay Node Concept in LTE A few years back, the relay node concept was introduced in 3GPP release 10 to solve performance issues like the reduced data rate, the weaker signal and the higher interference encountered on the radio coverage edges of the macrocells of the basestations by expending the covered zone and [...]

LTE-Advanced Carrier Aggregation : Definition, Advantages and CA Scenarios

LTE-Advanced Carrier Aggregation : Definition, Advantages and CA Scenarios The insistent demand for mobile data, particularly for streaming video, online gaming, and other data-intensive applications, are pushing mobile network operators to increase their capacity in terms of data throughput. Since the throughput is proportional to the bandwidth (wider is the band, faster is the data [...]

Nutaq to Supply SDR to US Navy Air Systems Command (NAVAIR)

Nutaq is proud to announce it has been selected to supply a software-defined radio (“SDR”), the PicoSDR 8×8, to the Naval Air Systems Command’s (NAVAIR) Naval Air Warfare Center Weapons Division (NAWCWD) division. This SDR is designed specifically for research on multi-element arrays and overcomes one of the major technological barriers with SDR so far by [...]

Nutaq Selected by NASA to Supply Software-Defined Radio (SDR)

Nutaq has been selected to supply a newly developed software-defined radio (SDR) to NASA’s Glenn Research Center. This new SDR is designed specifically for research on multi-element arrays and overcomes one of the major technological barriers with SDR so far by supporting a very high number of antennas while maintaining phase coherency between them; a [...]

Nutaq Announces Joint Collaboration for a 5G Base Station with Viettel

Nutaq Innovations has entered into an agreement with Viettel’s Network Technologies Center (VTTEK) for a joint collaboration program for the development of a 5G Massive MIMO base station prototype. Both organizations are joining forces in this program that covers the implementation of baseband processing for 5G Massive MIMO as well as the design of a [...]

Reciprocity Calibration for Massive MIMO – Part III

Generalized Least Square Method In the previous blog, we have discussed the reciprocity calibration for massive MIMO system using direct-path LS methods, or Argos. The calibration coefficients are estimated by the received signal from the single reference antenna. In this blog, we will show how the generalized LS method is used in the massive MIMO [...]

Configuring the Radio640 Reference Clock

Nutaq’s second generation PicoSDRs utilize our second generation Radio640 FMCs. Radio640 is based on AD9361 RF chip from the Analog devices. In this short application note, we highlight the different options that are available to configure the Radio640 reference clocks. The host APIs, which form part of the Nutaq Board and Software (BAS) software suite, [...]

LTE-based IoT – Demo at Embedded World Conference 2017

This demonstration will be presented at the Embedded World Conference 2017 from March 14-16 in Nürnberg, Germany. Nutaq will be located inside DSPecialist's booth in Hall 4, booth #236. DSPecialist is Nutaq's distributor  in Germany. Demo Description: The Internet of Things (IoT) is one of the hottest topics that industrials and researchers are studying from different theoretical, [...]

Reciprocity Calibration for Massive MIMO -Part II

Statistical Models for Propagation Channels Between Internal BS radios In the first part of this series blogs, we have discovered that the Massive MIMO system can use internal BS radios to achieve reciprocity calibration instead of relying on external calibrations. The focus of reciprocity calibration is to find out the calibration coefficients bp. A method [...]