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WiMAX CPE transceivers' role in base station apps

Posted: 04 Feb 2009     Print Version  Bookmark and Share

Keywords:WiMAX transceivers  base station  femtocells 

Single-chip WiMAX transceivers offer distinct cost and area savings over discrete designs, but strict transmit performance requirements have traditionally precluded their use in base station designs. Some newer devices offer vastly improved Tx SNR performance, however, making them useful in applications ranging from femtocells to microcells.

The wireless industry divides base stations into several broad and overlapping categories based on maximum output power and coverage area. The design examples that follow use the power output estimates. Price and equipment size are critical in all types of cells. Femtocell basestations require low cost and small size just to be viable in the market; while picocell and macrocell basestations have a distinct market advantage when their price and size beat the competition. Single-chip transceivers help to reduce both price and size, but these advantages only apply if the base station meets its performance requirements.

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