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Enhanced Spectrum Efficiency

Cellular network operators strive to maximize usage of available spectrum with the increasing growth in their network traffic. When capacity is constrained, operators must resort to adding more radio spectrum, new sites, or more sectors per site. However, by more efficiently using the existing spectrum, Quintel reduces the costs and delays associated with adding new sectors or new sites, or having to acquire or lease new spectrum.

Quintel antennas maximize spectrum efficiency by employing QTilt™, Sectorization in the Vertical Plane (SVP) and Spatial Diversity applications, as follows:

QTilt

QTilt has two major applications to enhance spectrum efficiency:

  1. F1/F2 Independent Tilt: To more efficiently re-use existing spectrum, Quintel creates two independent beams per sector of two different RF channels. Each of these beams is of the same technology and same operator, creating a macroscopic form of cell planning diversity across the network. This can be applied to any technology which uses multiple channels. As shown in diagram 1, this enables higher capacity than with the existing antennas.
  2. Code1/Code2 Independent Tilt: Quintel creates two independent beams in elevation per sector of the same cdma- or WCDMA-based technology and RF channel, and operator, to create cell splitting in the elevation plane..

Sectorization in the vertical plane

SVP is an innovative solution to more effectively use existing RF spectrum by adding sectors vertically, as opposed to horizontally. This approach increases capacity and improves the customer experience. Unlike traditional approaches, SVP requires no additional spectrum, horizontal antenna sector positions or cell sites to add capacity in 3G networks. In dense urban areas, SVP also improves coverage and capacity into tall buildings while minimizing interference. SVP provides greater spectral efficiencies resulting in increased capacity, significantly improved network quality and enhanced coverage. Learn how a leading operator achieved 50% capacity gain while eliminating call blocking with Quintel’s SVP application. Case Study.

Spatial Diversity

Spatial diversity is widely used as a technique to optimize spectrum efficiency but often needs to be sacrificed to add more services. Only Quintel enables the introduction of multiple services without sacrificing the quality gains of a spatially diversified network. With Quintel, it is like being able to get polarization diversity and spatial diversity without increasing the number of antennas. Press Release.

Quintel MultiServ 10-port antenna can be used for single-operator
spectral efficiency applications as well as operator sharing.

SERVICE 1 SERVICE 2
UMTS 2100 (F1) UMTS 2100 (F2)
UMTS 2100 (F1/Scr Code 1) UMTS 2100 (F2/Scr Code 2)
GSM1800 (full re-use layer) GSM1800 (fractional re-use layer)

Quintel’s MultiServ dual-band antenna products for the US market can also be used for the following spectral efficiency applications using two antennas to get the full benefits of spatial diversity performance.

SERVICE 1 SERVICE 2
UMTS850 (F1) UMTS850 (F2)
UMTS850 (F1/Scr Code 1) UMTS850 (F1/Scr Code 2)
CDMA800 (F1) CDMA800 (F2)
CDMA800 (F1/PN Code 1) CDMA800 (F1/PN Code 2)
UTMS1900 (F1) UTMS1900 (F2)
UTMS1900 (F1/Scr Code 1) UTMS1900 (F2/Scr Code 2)
CDMA1900 (F1) CDMA1900 (F2)
CDMA1900 (F1/Scr Code 1) CDMA1900 (F2/Scr Code 2)
GSM850 (full re-use layer) GSM850 (fractional re-use layer)
GSM1900 (full re-use layer) GSM1900 (fractional re-use layer)

Cellular network performance is the prime driver for the deployment of Quintel MultiServ antennas, as more than 50% performance gain can be achieved over multiple sites, and even more improvement is realized for individual hot-spot, high-traffic sites. This enhanced utilization of existing spectrum and site assets translates into an improved customer service experience and increased operator efficiency.

Discover how Quintel enhances network efficiency with sectorization in the vertical plane. Case Study.