发明名称 |
Methods and apparatus for enhancing channel estimation |
摘要 |
A noisy frequency-domain channel estimate enhancer includes an over-sampler configured to transform the noisy frequency-domain channel estimate into a time-domain channel estimate that is virtually over-sampled by an integer factor m. The over-sampler is connected to a de-interleaver configured to divide the time-domain channel estimate into m de-interleaved sub-vectors. The de-interleaver is connected to a suppressor configured to suppress noisy taps from each de-interleaved sub-vectors to form m noise suppressed sub-vectors. The suppressor is connected to a selector configured to select a noise suppressed sub-vector associated with a highest signal-to-noise ratio. The selector is connected to a discrete Fourier transformer configured to transform the selected noise suppressed sub-vector into a noise suppressed preliminary frequency-domain channel estimate. The discrete Fourier transformer is connected to a phase-shifter configured to phase-adjust the taps of the noise suppressed preliminary frequency-domain channel estimate to form an enhanced frequency-domain channel estimate.
|
申请公布号 |
US8462904(B2) |
申请公布日期 |
2013.06.11 |
申请号 |
US201113031812 |
申请日期 |
2011.02.22 |
申请人 |
GUO ZHIHENG;WANG HAI;ZHANG RUIQI;TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) |
发明人 |
GUO ZHIHENG;WANG HAI;ZHANG RUIQI |
分类号 |
H04B1/10 |
主分类号 |
H04B1/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|