发明名称 |
CHIP-LEVEL PROCESSING FOR JOINT DEMODULATION IN CDMA RECEIVERS |
摘要 |
A CDMA multi-code joint demodulation solution in which impairment suppression and channel matching operations are performed prior to despreading. Embodiments include a linear front end that performs chip-level suppression of signal components that are not included in a subsequent joint demodulation process. The pre-processing stage also carries out metric preparation and provides a vector decision statistic that is processed by a joint demodulation stage to extract per-code soft values for the symbols of interest in the received signal. Both code-specific and code-averaged versions of the linear processing are disclosed, as are several front-end configurations with equivalent performance, but different complexity trade-offs. These new approaches use a block formulation, requiring a set of input chip samples as an input, and perform all operations as matrix-vector multiplications, which is an approach amenable to efficient DSP or hardware implementation. |
申请公布号 |
WO2013167414(A1) |
申请公布日期 |
2013.11.14 |
申请号 |
WO2013EP58905 |
申请日期 |
2013.04.29 |
申请人 |
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) |
发明人 |
REIAL, ANDRES;GRANT, STEPHEN;SAMUEL BEBAWY, MICHAEL;WANG, YI-PIN ERIC |
分类号 |
H04B1/7097;H04B1/7105 |
主分类号 |
H04B1/7097 |
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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