发明名称 |
Method and apparatus to reduce spurious and intermodulation products through static non-linearity correction of digital conversion |
摘要 |
Apparatus and method to perform the real-time correction of differential non-linearities in a broadband wireless transceiver system using a digital look-up table. Initially, the values for the digital look-up table are determined prior to full operational use of the broadband transceiver system. The one set of values represents inverse response of the transfer function of the D/A converter. The other sets of values represents the inverse response of the transfer function for each A/D converter. The inverse response values for the D/A and A/D converters are stored in a non-volatile memory. During initialization of the broadband transceiver system, the values of the inverse response of the transfer function for the D/A converter are transferred from the non-volatile memory to a high speed memory. The values of the inverse response of the transfer function for each A/D converter is also transferred to another set of high speed memory. For a transmitting signal, the signal is used as an address into the high speed memory to output a corrected value for the D/A converter. For a received signal, each output from the A/D converters is used as an address into each high speed memory. The output from each high speed memory is a corrected value for the respective A/D converter. |
申请公布号 |
AU6057100(A) |
申请公布日期 |
2002.01.08 |
申请号 |
AU20000060571 |
申请日期 |
2000.06.28 |
申请人 |
AIRNET COMMUNICATIONS CORPORATION |
发明人 |
MICHAEL KOMARA;JOHN R. NOLL |
分类号 |
H03M1/10;H03M1/12;H03M1/66;H04L27/36 |
主分类号 |
H03M1/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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