{"id":12183,"date":"2021-06-01T09:59:05","date_gmt":"2021-06-01T08:59:05","guid":{"rendered":"https:\/\/www.innovationnewsnetwork.com\/?p=12183"},"modified":"2021-08-06T13:42:20","modified_gmt":"2021-08-06T12:42:20","slug":"japanese-scientists-enhance-future-5g-communication-systems","status":"publish","type":"post","link":"https:\/\/www.innovationnewsnetwork.com\/japanese-scientists-enhance-future-5g-communication-systems\/12183\/","title":{"rendered":"Japanese scientists enhance future 5G communication systems"},"content":{"rendered":"
Manufactured by scientists at the Tokyo Institute of Technology<\/a>, the novel 5G communication network is comprised of a battery-free design, making it both energy-efficient and economical, offering a plethora of advancements for an extensive range of sectors.<\/a><\/p>\n Wireless data bandwidth is becoming increasingly ubiquitous year after year, with millimetre wave \u2013 a short wavelength spectrum \u2013 displaying the most promise for effective 5G communication systems. Phased array antennas are being modified to leverage high-capacity millimetre-wave frequencies to achieve this feat, although current technology is limited to line-of-sight propagation.<\/p>\n Nevertheless, to attain non-line-of-sight communications, scientists are experimenting with relay nodes \u2013 proficient in increasing coverage, bandwidth, and reliability. However, a problem that persists with this method is the power supply, with conventional relay nodes required to have their own power supply unit or external power source.<\/p>\n To overcome this obstacle, the team have established a 28-GHz phased-array transceiver for 5G communication networks which is wirelessly powered, utilising a vector backscattering technique with a 24GHz oscillator and 4GHz intermediate frequency signals.<\/p>\n Professor Kenichi Okada, the leader of the project for the Tokyo Institute of Technology, said: \u201cBackscatter communication makes it possible to harvest energy from incident signals and reflects back parts of the same signals while modulating the data. In this design, backscatter up-converts the 5G New Radio (5G NR) spectrum at 4GHz and transmits at 28GHz.\u201d<\/p>\n The specially designed transmitter also works as a phase shifter, which facilitates it to modify the phase of incoming signals, meaning that it can effectively perform beamforming, where an array of antennas can transmit signals in a specific direction, allowing information to be disseminated effectively whilst mitigating interference.<\/p>\n Perhaps the most vital components of the transceiver are the rectifier operation and receiver; the received signal power for wireless power transfer (WPT) is enhanced by power combiners and passive phase shifters, with the rectifier working as a self-heterodyne mixer.<\/p>\n The entire system is extremely diminutive, configured in areas as small as 1.8 mm2<\/sup>, exerting 3.1 mW of power in receive mode and -2.2 dBm of saturated equivalent isotropic radiated power in transmit mode. Furthermore, the vector-summing backscatter boasts a 360\u00b0 phase range of coverage with a 7-bit phase resolution, requiring a mere 0.03 mW in receive and transmit mode.<\/p>\n Okada said: \u201cThe proposed battery-free transceiver enhances 5G connectivity by serving as a repeater between indoor and outdoor environments. This, in turn, will improve user experiences and create new opportunities for operational efficiency in internet-of-things, industrial automation, and new communication services.\u201d<\/p>\n","protected":false},"excerpt":{"rendered":" The realisation of green 5G communication systems has become much closer with the development of a wirelessly powered relay network.<\/p>\n","protected":false},"author":15,"featured_media":12184,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[830],"tags":[885,24208],"acf":[],"yoast_head":"\n