Uplink pilot design method of narrow-band communication system, sending end and receiving end

Abstract

The embodiment of the invention provides an uplink pilot design method of a narrow-band communication system, a sending end and a receiving end. The method comprises the following steps: acquiring information of at least one time-frequency resource block from a receiving end; obtaining a corresponding reference signal sequence according to the information of each time-frequency resource block; wherein the reference signal sequence comprises a preset number of reference signals; in the reference signal sequence, resetting the corresponding reference signal to 0 every other sequence element fromthe second reference signal to obtain a new reference signal sequence; and sending the new reference signal sequence to the receiving end in the time-frequency resource block, enabling the receivingend to obtain frequency offset according to the new reference signal sequence. According to the sending end provided by the embodiment of the invention, the reference signal sequence obtained throughcalculation is updated to obtain the new reference signal sequence, and the new reference signal sequence is sent to the receiving end through the distributed time-frequency resource block, so that the receiving end can more accurately calculate the frequency offset through the new reference signal sequence.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of wireless communication, and in particular to a method for designing an uplink pilot in a narrowband communication system, a sending end, and a receiving end. Background technique [0002] The original 230 narrowband communication system is a single-subband system. Each uplink subframe has only one column of reference signals, and three uplink subframes are bound and scheduled. There can be three columns of reference signals. Each user has three columns of reference signals within 25ms of a wireless frame. It can be utilized that while obtaining the 3-column channel estimation results, the receiving end can estimate the frequency offset by using the cumulative phase difference of the previous and subsequent reference sequences while estimating the channel. After the introduction of multi-subband technology, uplink subframes are required to support single-subframe independent schedulin...

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Problems solved by technology

[0004] The embodiment of the present invention provides an uplink pilot design method of a narrowband communication system, a transmitting end, and a receiving end to solve the problem that the accurate frequency difference cannot be obtained by estimating the frequency difference by using a single-column reference signal in the prior art

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