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Kumu Networks: Full Duplex on One Channel


Kumu Networks is in an enviable position fitting today’s requirements for radio-frequency system designs. The Sunnyvale, Calif., startup, incorporated in 2011 and coming together the following year, has developed self-interference cancellation technology, enabling radios to send and receive signals at the same time on the same channel or on an adjacent channel. This full-duplex technology has... » read more

5G Test And Deployment


Advantest’s Adrian Kwan talks about 5G test, how it will change as the wireless technology evolves toward higher frequency signals, and what happens when many more users and backward compatibility are added to the network. https://youtu.be/x_-3yX7fWak » read more

5G New Radio Signal Design


By Gent Paparisto, Joel Kirshman, and David Vye The CP-OFDM modulation scheme will have many options. Variable subcarrier spacing (SCS) will be 3.75, 15, 30, 60, 120, 240, 480 kHz with sub-1 GHz of 15 and 30 kHz and sub-6 GHz of 15, 30, and 60 kHz, and above 6 GHz of 60 and 120 kHz. There will be normal and extended CP options. Slot duration will be 0.5 ms, subframe curation will be 1 ms, an... » read more

Lessons Learned In 4G LTE


By Ann Steffora Mutschler While 4G LTE has moved into the mainstream, there are lessons to be learned about these very complex modems, especially from the perspective of balancing power and performance. The road to mainstream wasn’t exactly smooth sailing. “4G LTE initially got a bad rap for battery life, for power consumption,” said Pete Hardee, low-power design solution marketin... » read more