Method and device for decoding uplink control channels in LTE TDD system

Abstract

The invention discloses a method and a device for decoding uplink control channels in an LTE TDD system. The method comprises the following steps: carrying out trellis decoding of soft information received through a control channel to acquire a vector to be judged; according to a preconstructed characteristic vector matrix and the obtained vector to be judged, acquiring a fifth information bit value and a ninth information bit value, wherein characteristic vector groups consisting of characteristic vectors in the characteristic vector matrix respectively corresponding to each information bit in an information bit sequence; according to the acquired fifth information bit value and the ninth information bit value and characteristic vectors in the characteristic vector matrix corresponding to both bit values, carrying out interference removing of the vector to be judged to acquire a new vector to be judged; and according to the corresponding relation of the characteristic vector matrix and the new vector to be judged, acquiring other information bit values in the information bit sequence. Meanwhile, the invention also discloses a device for decoding uplink control channels in the LTE TDD system. The method and the device reduce decoding complexity of uplink control channels in the LTE TDD system, and ensure decoding performance.

Description

technical field [0001] The present invention relates to channel coding and decoding technology in wireless communication systems, in particular to a method and a decoding device for uplink control channel decoding in a Long Term Evolution Time Division Duplex (LTE TDD, Long Term Evolution Time Division Duplex) system. Background technique [0002] In the Time Division-Synchronous Code Division Multiple Access (TD-SCDMA, Time Division-Synchronous CodeDivision Multiple Access) system, the control information is carried out using the RM (Reed-Muller) coding code, and the length of the coded information bits is short, for example, the coded block The code length is 16 bits, the longest coded information bit length is 5 bits, or the encoded block code length is 32 bits, and the longest coded information bit length is 6 bits. Generally, soft and hard correlation decoding methods (ie, correlation operations) are used to decode the encoded block codes. Since the length of coded info...

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Problems solved by technology

When using the soft and hard correlation decoding method for decoding, since the complexity is exponentially related to the length of the coded information bit, it is better to use the soft and hard correlation decoding method to decode the longer code after the control information is coded. code, the decoding complexity is high, and the implementation is complex

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