Pilot sending and receiving method and device for special carrier

Abstract

The invention relates to the field of wireless communication and discloses a method and a device for transmitting and receiving a pilot frequency in a special carrier wave. Sub-frames, with the time domain occupying four symbols, of the MBSFN of the special wave carry out channel estimation relatively accurately according to the pilot frequency. In the invention and in the MBSFN of the special carrier wave, as to the sub-frames occupying four symbols in the time domain, two or three sub-carrier waves of other signals are arranged between every two adjacent pilot frequency sub-carrier waves bearing the pilot signals in the same symbol. As to the proposal of bearing the pilot frequency by two symbols, the pilot frequency sub-carrier wave is configured among the sub-carrier waves with the number of one fourth of the two symbols, one symbol is arranged between the two symbols and the pilot frequency sub-carrier waves in the two symbols are diverged. As to the proposal of bearing the pilot frequency by one symbol, the symbol bearing the pilot frequency is not the symbol at the foremost or the hindmost of the sub-frames.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to the technology of sending and receiving pilot frequency in multicast broadcast multimedia service single frequency network of dedicated carrier. Background technique [0002] In recent years, a multi-carrier transmission technology represented by Orthogonal Frequency Division Multiplexing (Orthogonal Frequency Division Multiplexing, "OFDM") has attracted widespread attention. Multi-carrier transmission decomposes a data stream into several independent sub-streams, each of which will have a much lower bit rate. Using the low-rate multi-state symbols formed at such a low bit rate to modulate the corresponding subcarriers constitutes a transmission system in which multiple low-rate symbols are sent in parallel. [0003] As a multiplexing technique, OFDM multiplexes multiple signals on different orthogonal subcarriers. The traditional frequency division multiplexing (Frequency...

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Problems solved by technology

[0010] However, the inventors of the present invention have found that since the minimum allocated resource block of the candidate frame structure is different from the minimum allocated resource block of the common frame structure, such as: the minimum resource block allocated to the MBSFN common frame contains 6 symbols, and the allocated The number of symbols contained in the minimum resource block for an MBSFN candidate frame is 4, therefore, as image 3 The pilot structure shown cannot be directly used for the pilot structure of an MBSFN candidate frame for a dedicated carrier

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