Advertisement

Article

PMC-Sierra’s WiMAX RFICs offer modular architecture, dual-band operation

PMC-Sierra's first WiMAX RF IC solutions deliver the design flexibility to handle three product types and provide multi-band capability as well.

Designed to work hand-in-glove with Sequans Communications' baseband/MAC chips, the WiZIRD RFICs can be integrated into femtocell base stations, customer premises equipment (CPE), and mobile station designs. Both chips conform to the IEEE 802.16e-2005 (Mobile WiMAX) standard and are Wave2 certified by the WiMAX Forum.

The PM8800 WiZIRD 2×2 MIMO lays claim to being the industry's most integrated WiMAX RF IC solution.

Its 2×2 MIMO (two transmit and two receive radio paths) capability supports a maximum downlink data rate of 63 Mbit/s per sector and a peak uplink data rate of 28 Mbit/s per sector in a 10 MHz channel.

The PM8800 also operates in two bands—2.3 to2.7 GHz and 3.3 to 3.8 GHz—which allows a single design to cover operate virtually anywhere in the world. (A significant design challenge for WiMAX is the lack of a single global spectrum allocation.)

These features enable next generation consumer services such as gaming, video and voice conferencing, streaming media applications, as well as video posting and sharing.

The PM8801 WiZIRD 1×2 MIMO integrates a single transmit and two receive radio paths, as well as multi-band support. It is targeted at WiMAX Wave2 subscriber equipment such as CPE and laptop devices.

The WiZIRD family is powered by PMC-Sierra's “extend range, rate and roaming architecture” (EXTRRRA), which enables WiMAX service providers to expand coverage areas with minimum capital expenditure, increase the data rate using full 2Tx/2Rx MIMO capability, and support global roaming.

PMC-Sierra's collaboration with Sequans Communications is a key part of the product's appeal because it gives ODMs a reference design that features a leading WiMAX baseband chip supplier.

PMC Sierra's WiZIRD RF IC family is intended to be integrated with Sequans' SQN1130 and SQN2130 subscriber station and base station chips. These complete solutions address OEM/ODM needs to deliver the carrier class end products required for high-performance, cost-effective and quality-driven WiMAX deployments.

In addition to 2×2 MIMO and multi-band support, the PM8800 WiZIRD integrates direct-conversion ZIF RF transceiver, analog and digital converters, and an industry-standard JEDEC JESD207 compliant baseband digital interface in a single device (see Figure 3).

The dual-radio path PM8800 WiZIRD 2Tx/2Rx eliminates the need for multiple radio devices and provides programmability to support multiple frequency bands for worldwide WiMAX roaming.

The device delivers up to 64QAM modulation for both Tx paths at 0dBm output power level with an EVM rating that addresses a complete spectrum of WiMAX solutions from base station applications to mobile subscriber solutions. The PM8800 features:

  • Low-power dual-receivers and dual-transmitters;
  • Dual-band transceiver covering the 2.3-2.7 GHz and 3.3-3.8 GHz spectra;
  • Direct-conversion ZIF design;
  • Support for 802.16e-2005 and 802.16-2004 IEEE standards;
  • Configurable channel bandwidths of 3.5 MHz, 5 MHz, 7 MHz, 8.75 MHz, 10 MHz, 14 MHz and 20 MHz;
  • Integrated DCXO supports AFC with no external components;
  • Flexible baseband device interface options: digital parallel I/Q interface (JEDEC JESD207) or analog I/Q;
  • Integrated analog-to-digital and digital-to-analog converters;
  • Integrated transmitter baluns; and
  • Integrated hardware support for calibration

The PM8801 WiZIRD 1×2 MIMO offers similar functionality to the PM8800 WiZIRD 2×2 MIMO but integrates a single transmit and two receive branches, Multi-Band support and analog I/Q interfaces. The devices are software and hardware compatible.

The PM8800 WiZIRD 2Tx/2Rx and PM8801 WiZIRD 1Tx/2Rx are sampling now. The devices are implemented in CMOS technology and packaged in a 108-pin MLF/QFN package. The devices are rated for industrial temperature operation (-40 to +85 degrees Celsius).

A comprehensive support package including datasheets, application notes and reference design material is available at www.pmc-sierra.com.

0 comments on “PMC-Sierra’s WiMAX RFICs offer modular architecture, dual-band operation

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.