发明名称 |
REDUCED-COMPLEXITY PARAMETRIC COVARIANCE ESTIMATION FOR PRECODED MIMO TRANSMISSIONS |
摘要 |
<p>A model-based technique for estimating impairment covariance associated with a MIMO signal is disclosed. In an exemplary method, an impairment model is constructed for a received composite information signal comprising at least a first data stream transmitted from first and second antennas according to a first antenna weighting vector. The impairment model includes first and second model terms corresponding to the first and second antennas, respectively, but in several embodiments does not include a cross-antenna interference term. In another embodiment, an impairment model for a received MIMO signal is constructed by computing an impairment model term for each antenna and an additional term to account for precoding interference in a single-stream MIMO transmission scenario. The impairment terms are grouped so that only two associated scaling terms are unknown; values for the scaling terms are estimated by fitting the model to measured impairment covariance values.</p> |
申请公布号 |
EP2253071(A1) |
申请公布日期 |
2010.11.24 |
申请号 |
EP20090714533 |
申请日期 |
2009.02.11 |
申请人 |
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) |
发明人 |
GRANT, STEPHEN;CAIRNS, DOUGLAS |
分类号 |
H04B1/712 |
主分类号 |
H04B1/712 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|