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 field of mobile communication technology, and in particular to a signal receiving detection method, a mobile terminal, a signal sending method and a signal sending device. Background technique [0002] At present, in the long-term evolution (LTE) scheme, it is basically determined that the orthogonal frequency division multiplexing (OFDM) technology is used as the basic technology of the system air interface. [0003] When using OFDM technology, pilot symbols are additional overhead, and their number should be as few as possible in order to maximize the transmission rate of data symbols. Generally, pilot symbols are scattered among data symbols to provide the channel response as complete as possible in frequency and time. The set of frequency and time at which pilot symbols are inserted is called a pilot pattern. figure 1 A pilot pattern is shown, where "D" represents a pilot symbol, and "1" represents a data symbol. In ...

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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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