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AssigneeKabushiki Kaisha Toshiba
InventorsVishakan PONNAMPALAM, Magnus Sandell, Andrew Lillie, Darren McNamara
Estimating the term…
In a lattice-reduction-aided receiver based wireless communications system, soft estimates of transmitted bit values are determined from a received signal by applying lattice reduction to the channel estimate and equalising the received signal in accordance with the reduced basis channel, and determining probabilities of transmitted bits having particular values by generating a set of candidate vectors in the reduced basis based on nearest candidate vectors, determining a corresponding transmitted symbol vector for each candidate vector and, on the basis of the received signal determining the probability of each transmitted bit value having been transmitted.
A method for determining soft estimates of transmitted bit values from a received signal in a lattice-reduction-aided receiver based wireless communications system, the method comprising obtaining an estimate of the channel response, applying lattice reduction to said channel response and equalisation of said received signal in accordance with the reduced basis channel, and determining probabilities of transmitted bits having particular values by means of generating a list of candidate vectors in the reduced basis based on nearest candidate vectors, determining a corresponding transmitted symbol vector for each candidate vector and, on the basis of the received signal determining the probability of each transmitted bit value having been transmitted.
Apparatus for determining soft estimates of transmitted bit values from a received signal in a lattice-reduction-aided receiver based wireless communications system, comprising means for obtaining an estimate of the channel response, means for applying lattice reduction to said channel response, means for equalisation of the received signal in accordance with the reduced basis channel, and soft information determining means for determining probabilities of transmitted bits having particular values, said soft information determining means comprising means for generating a list of candidate vectors in the reduced basis on nearest candidate vectors, means for determining a transmitted symbol vector for each candidate vector and, means for determining the probability of said transmitted bit value having been transmitted, on the basis of the received signal.
A computer readable medium storing a computer program product comprising computer executable instructions when executed by a general purpose computer controlled communications apparatus results in the performance of steps, comprising:
Dependencies are inferred from the claim text.