chip rate


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chip rate

In direct sequence spread spectrum technologies such as DSSS and CDMA, it is the number of bits per second (chips per second) used in the spreading signal. A different spreading signal is added to the data signal to code each transmission uniquely. The number of chips (bits) in the spreading signal is significantly greater than the data bits. Chip rate is measured in "megachips per second" (Mcps), which is millions of chips per second. See spread spectrum, CDMA and 802.11.
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One possible explanation is that the R-FCH suffers from smaller interference because of a larger spreading gain (note that spreading gain is defined as a ratio of chip rate over bit rate).
ADI will demonstrate 3G products, including the SoftFone-LCR chipset supporting the Low Chip Rate (LCR) TD-SCDMA air interface, and SoftFone-W for W-CDMA handsets.
5G and 3G baseband processing including equalization, chip rate, symbol rate, and advanced 3G functions like smart antenna and multi user detection," said Roman Robles, manager, Digital Technologies Operation, RF and DSP Infrastructure Systems Division.
The SoftFone-LCR chipset provides all the necessary functions to design a handset based on the emerging 3G Low Chip Rate (LCR) TD-SCDMA air interface.
NYSE: ADI), a global leader in high-performance semiconductors for signal processing applications, today announced that it will supply 3G cellular chipsets to Holley Communications, of Hangzhou, China, a leading wireless communications company and a wholly-owned subsidiary of Holley Group Co Ltd, for Holley's next-generation handsets based on the emerging TD-SCDMA Low Chip Rate (LCR) air interface.