Abstract: A method is disclosed for frequency offset compensation and equalization in an orthogonal frequency division multiplexing system. The method comprises: acquiring a channel estimation value h and a frequency offset value f at a reference symbol; acquiring a Toeplitz matrix M(f) based on the frequency offset value f; performing phase compensation on the channel estimation value h to obtain a channel estimation value h? at a data symbol; and acquiring an estimation value of a transmitted symbol x based on M(f) and h?. A device is also disclosed for frequency offset compensation and equalization in the orthogonal frequency division multiplexing system. The device comprises a channel estimation unit, a frequency offset acquisition unit, a channel compensation unit and an equalization estimation unit.

Abstract: The present invention discloses a method for determining a subband index, the method comprises: an Evolved Node B (eNB) receives r, calculates a difference between the received r and a formula ? ? N - s i M - i ? corresponding to each obtained subband index, searches sequences ? N - 1 M - i ? , ? N - 2 M - i ? , … ? , ? 0 M - i ? in a stored intermediate value table according to the calculated difference to obtain each si constituting {si}i=0M?1. The present invention further discloses a device for determining a subband index, the device comprises a table generation module, a receiving module and a calculation module. The method and device disclosed in the present invention are capable of reducing the storage space needed for a subband index report.

Abstract: A method is disclosed for frequency offset compensation and equalization in an orthogonal frequency division multiplexing system. The method comprises: acquiring a channel estimation value h and a frequency offset value f at a reference symbol; acquiring a Toeplitz matrix M(f) based on the frequency offset value f; performing phase compensation on the channel estimation value h to obtain a channel estimation value h? at a data symbol; and acquiring an estimation value of a transmitted symbol x based on M(f) and h?. A device is also disclosed for frequency offset compensation and equalization in the orthogonal frequency division multiplexing system. The device comprises a channel estimation unit, a frequency offset acquisition unit, a channel compensation unit and an equalization estimation unit.

Abstract: A calculation method of a turbo code internal interleaver is disclosed by the present invention, and comprises: dividing a sequence with a length of Kj, which is input into a turbo code internal interleaver, into a plurality of windows each with a window length of ?j, the window length ?j satisfying 2f2?j(mod Kj)=0, and Kj being divided exactly by ?j, wherein f2 is a parameter dependent on Kj; obtaining output indices each of which corresponds to each input index in a first window; calculating successively output indices each of which corresponds to each input index in a rest window according to the output indices each of which corresponds to each input index in the first window. A calculation device of a turbo code internal interleaver is also disclosed by the present invention. With the present invention, the computational complexity of the turbo code internal interleaver can be reduced, so as to reduce the time delay of a specific calculation and save memory resources.

Abstract: The present invention discloses a method for determining a subband index, the method comprises: an Evolved Node B (eNB) receives r, calculates a difference between the received r and a formula ? ? N - s i M - i ? corresponding to each obtained subband index, searches sequences ? N - 1 M - i ? , ? N - 2 M - i ? , … ? , ? 0 M - i ? in a stored intermediate value table according to the calculated difference to obtain each si constituting {si}i=0M?1. The present invention further discloses a device for determining a subband index, the device comprises a table generation module, a receiving module and a calculation module. The method and device disclosed in the present invention are capable of reducing the storage space needed for a subband index report.