Signal reception and detection method, mobile terminal and method and device for signal transmission

Abstract

The invention relates to a signal reception and detection method. The method comprises the following steps: an adjacent cell with a pilot signal for disturbing data signals in the cell is a disturbed cell; only the data signals in the cell in the different time-frequency resource positions with the pilot symbols in the disturbed cell are received and detected; and the first default value is adopted as the reception and detection result of the data signals which are not actually received and detected. In the invention, the data in the same time-frequency resource position with the pilot symbols in the disturbed cell is disturbed, therefore, the undisturbed data, i.e. only the data in the different time-frequency resource positions with the pilot symbols in the disturbed cell is actually received and accepted. The intensive interference of pilot frequency of the adjacent cell to the UE on the edge of the cell is avoided, the decoding performance of the UE is enhanced, and the demodulation errors are reduced; and the error propagation caused during the soft-decision iterative decoding is also avoided, so the data receptivity of the UE is further improved. The invention also provides a UE as well as a method and a device for signal transmission.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a signal reception detection method, a mobile terminal, a signal transmission method and a signal transmission device. Background technique [0002] At present, in the Long Term Evolution (LTE) scheme, it is basically determined that Orthogonal Frequency Division Multiplexing (OFDM) technology is used as the basic technology for the air interface of the system. [0003] When using OFDM technology, the pilot symbol is an additional overhead, and its number should be as small as possible in order to maximize the transmission rate of the data symbol. Typically, pilot symbols are interspersed among data symbols to provide as complete a range of channel response as possible in frequency and time. The set of frequencies and times at which pilot symbols are inserted is called a pilot pattern. figure 1 A pilot pattern is shown, where "D" indicates pilot symbols and...

AI Technical Summary

Problems solved by technology

[0004] However, as the transmission power of pilot symbols increases, the Block Error Rate (BLER) of cell-edge users also increases. That is to say, although the channel estimation quality of each cell is improved, the data transmission quality of cell-edge users is lower. Decreased

At present, there is no technical solution that can solve this contradiction

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