Reduced dimension time domain channel estimation in a wireless communication network
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United States of America Patent
Stats
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Nov 21, 2017
Issued Date -
N/A
app pub date -
Dec 5, 2016
filing date -
May 28, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Methods and systems for obtaining improved joint channel estimates for a multi-user, frequency-multiplexed data transmission such as SC-FDMA or OFDM begins by estimating separate contributions of users (and/or other signal sources) to the received signal based on joint frequency domain channel estimates. A reduced data set is obtained by subtracting contributions of one or more users from the received data, leaving only the estimated contributions of the remaining users, with noise and residual estimation error signal. Time domain joint channel estimation is then performed on the reduced data set, which is feasible because the number of users has been reduced. In exemplary embodiments, the reduced data set includes only one estimated user contribution. This process is repeated to obtain time domain estimates for all of the users. The method can be repeated by using the TD channel estimates to re-estimate the user contributions and calculate revised TD channel estimates.
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International Classification(s)
- 2016 Application Filing Year
- H04L Class
- 37326 Applications Filed
- 27972 Patents Issued To-Date
- 74.94 % Issued To-Date
Cited Art Landscape
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- 0 Citation Count
- H04L Class
- 0 % this patent is cited more than
- 8 Age
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