| TR TECHNOLOGIES INC. Patent applications |
| Patent application number | Title | Published |
|---|
| 20110280324 | QUANTIZED CHANNEL STATE INFORMATION PREDICTION IN MULTIPLE ANTENNA SYSTEMS - A CSI vector quantizer (VQ) system is provided for time-correlated channels. The VQ system operates a receiver forwarding quantized channel state information in the form of indices and a transmitter predicting channel state change. The VQ system is aimed at feedback channels, in which bit errors, erasures and delays can occur. The VQ system uses transmitter-side channel prediction algorithms that work with the quantized CSI information and allow the system to recover from feedback channel transmission errors, erasures and delays. Moreover, the techniques can be used to lower the required feedback rate, while keeping the system's throughput at the required level. | 11-17-2011 |
| 20110274182 | MULTI-TIERED QUANTIZATION OF CHANNEL STATE INFORMATION IN MULTIPLE ANTENNA SYSTEMS - A multi-tiered CSI vector quantizer (VQ) is provided for time-correlated channels. The VQ operates by quantizing channel state information by reference to both the current channel state information and a prior channel state quantization. A system is also provided that uses multi-tiered CSI quantizers. Enhanced signaling between the transmitter and receivers is provided in order to facilitate the use of multi-tiered CSI quantizers. | 11-10-2011 |
| 20090265601 | MITIGATION OF TRANSMISSION ERRORS OF QUANTIZED CHANNEL STATE INFORMATION FEEDBACK IN MULTI ANTENNA SYSTEMS - Methods are disclosed for improving communications on feedback transmission channels, in which there is a possibility of bit errors. The basic solutions to counter those errors are: proper design of the CSI vector quantizer indexing (i.e., the bit representation of centroid indices) in order to minimize impact of index errors, use of error detection techniques to expurgate the erroneous indices and use of other methods to recover correct indices. | 10-22-2009 |
