Suchergebnisse

Internet usage in India has witnessed an enormous growth in last few years. The wireless data usage in 2017 has increased from 20,092 million GB per year from 828 million GB per year in 2014, showing a growth of more than 24 times. This increasing use of data is causing congestion in the existing bands which finally affects the quality of services provided to consumers. In order to cater to this surge in data consumption, it is essential that there should be a commensurate increase in the supply of broadband internet. Perhaps the approach to the supply also needs to change. Availability of additional spectrum is an important piece of this puzzle. V-band (57 GHz - 64 GHz) and E-band (71-76 GHz and 81-86 GHz) are two microwave bands which can be useful for bridging this need for additional spectrum. Spectrum in these bands can be used for high capacity data transmissions for last mile connectivity over short distances ranging from 200 meters to 3 km. These bands can be put to a variety of backhaul (i.e. for connecting towers). V-band can also be used for access under the Wi-Gig standards.

A detailed report of the spectrum occupancy measurement drive conducted outdoors in three rural villages of Asong in Mkpat Enin, Ikot Akpabio in Etinan, and Afaha Offioing in Nsit Ibom Local Government Areas of Akwa Ibom state in Nigeria on the UHF and VHF broadcast frequency bands is here presented. The spectrum usage on a highly conservative noise floor, was high in the VHF band, thereby not having enough free bandwidth for secondary spectrum access while the UHF band percentage utilization for the three villages were found to be at 33%, 41% and 55% with available free cumulative bandwidths of 264MHz, 232MHz, and 176MHz respectively. From the findings, Nigeria can comfortably accommodate a lightly licensed spectrum band in the UHF band to enhancer rural broadband services.

A letter report issued by the General Accounting Office with an abstract that begins "Current plans for identifying spectrum to support third generation mobile wireless systems by July 30, 2001, and to auction licenses by September 30, 2002, are premature. GAO agrees with the Federal Communications Commission (FCC) and the Department of Commerce that delaying the identification of spectrum and the auction of licenses for third generation wireless systems could serve the public interest. Adequate information is not currently available to fully identify and address the uncertainties and risks of reallocation. The Department of Defense (DOD) and the federal government could make decisions affecting national security without knowing the full extent of risks they face or steps available to reduce those risks. Extending the current schedule for the identification and auction of licenses for this portion of the spectrum would allow DOD to complete technical and operational assessments and to consider the nation's future spectrum requirements. In addition, a delay would allow time to further consider the adequacy of existing national spectrum strategies affecting international agreements and for DOD overseas military operations to modify these strategies as necessary and to incorporate them into the nation's long-range spectrum plan."

China has proactively allocated mid-band spectrum for 5G to facilitate its deployment of advanced networks, while in the US regulatory delays and overreliance on unlicensed spectrum harm the economy and national security.
The post The Crucial Role of Mid-Band Spectrum for 5G and 6G Networks appeared first on American Enterprise Institute - AEI.

This book provides information regarding spectrum sharing between wireless systems, motivated by emerging new technologies. Readers will benefit from information about how to conduct research on the interference mitigation between IMT-Advanced and FSS. The author presents a deterministic analysis for interference to noise ratio (I/N), adjacent channel interference ratio (ACIR), field strength, and path loss propagation, in order to determine the separation distances in the co-channel interference (CCI) and adjacent channel Interference (ACI) scenarios. An analytical model is discussed, for the shielding mitigation technique based on the deterministic analysis of the propagation model. The shielding technique has been developed based on test bed measurements for evaluating the attenuation of the proposed materials. Matlab"!and Transfinite Visualyse Pro"!have been used as simulation tools for the verification of the obtained results, whereas the IMT-Advanced parameters have been represented by Worldwide Interoperability for Microwave Access (WiMAX) 802.16e