Adaptive compression of channel feedback based on second order channel statistics
US8213368B2 · kind B2 · utility
8Cited by
5References
52Claims
0Family size
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Key dates
| Filing date | Jul 13, 2007 |
| Grant date | Jul 3, 2012 |
| Priority date | — |
| Expiry date | Jun 22, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/003
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of variable rate vector quantization reduces the amount of channel state feedback. Channel coefficients of a communication channel are determined and second order statistics (e.g., variances) of the channel taps are computed). Bit allocation for the channel taps are determined based on the coefficients statistics. The channel taps are individually quantized at rates determined based on said bit allocations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.