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Transceiver platform suits WiMAX base station apps

Posted: 20 Nov 2007     Print Version  Bookmark and Share

Keywords:reference design  MicroTCA  broadband wireless transceiver 

Lime Microsystems' reference design for a MicroTCA broadband wireless transceiver targets at femtocell and picocell WiMAX base station applications.

To minimise costs and inventory, the re-configurable design supports a variety of network configurations, bandwidths and data rates. The transceiver has 6 user-selectable channel bandwidths from 1.5MHz to 14MHz and can be digitally configured to operate in bands from 2-4GHz.

Using a high level command set, the design can be configured for half-duplex and full-duplex operation in both frequency division multiplex (FDM) and time division multiplex (TDM) modes. The board can also be used as a "plug-and-play" transceiver for rapid evaluation and deployment of WiMAX base stations based upon ACTA or MicroTCA standards.

The zero-IF transceiver uses 12bit baseband ADCs and DACs. A 40MHz sampling rate is derived from a low-noise clock. Its serial RapidIO interface supports a throughput of up to 3.125Gbps and can communicate via any advanced mezzanine cards ports.

A single port carries both I/Q and control traffic and an I/Q record and playback capability simplifies testing. A full speed USB interface is provided for PC controlled standalone operation.

The development platform will be available in December at a one-off price of Rs.4.75 lakh ($12,000).

- Jack Shandle
Wireless Net DesignLine




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