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High-volume manufacturing of current generation orthogonal frequency division multiplexing (OFDM) transceivers mandates testing for error-vector-magnitude (EVM) at production testing. During EVM test, a modulated RF input signal is down-converted and demodulated to obtain the output baseband digital data and EVM is computed by processing the baseband digital data. Hence, production testing of OFDM...
Bit error rate (BER) is a key specification that characterizes the performance of a communication receiver. In digital radio applications, running BER tests during production is highly prohibitive in terms of test cost due to the prolonged testing time required for applying RF modulated digital data-frames (each containing pseudo-random bit patterns) to the receiver and capturing the response digital...
As new standards are developed, designing and developing tests for the new devices conforming to the emerging standards has become a necessity. Designing new products for emerging standards needs focused effort from design engineers. In a similar manner, test is becoming a critical part of the manufacturing cycle due to escalating tester costs, as the testing requirements for every standard are different...
In the recent days, ultra-wide band (UWB) has drawn significant attention as an emerging wireless standard. While the multiband (MB) orthogonal frequency division multiplexing (OFDM) PHY standards (IEEE 802.15.3a) are still being formulated, the first set of UWB devices is set to hit the consumer market by the end of 2005. For MB-OFDM UWB devices to be successful in the marketplace it is necessary...
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