Signal processing method and device

A signal processing and signal technology, applied in the field of signal processing, can solve problems affecting channel estimation performance, limited coverage, limited uplink coverage, etc.

Pending Publication Date: 2020-07-17
HUAWEI TECH CO LTD
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Problems solved by technology

[0004] However, if the uplink DMRS uses the ZC sequence, the peak-to-average power ratio (PAPR) of the DMRS will be higher than the PAPR of the corresponding uplink transmission signal, resulting in DMRS out-of-band spurious emission and in-band signal loss, affecting Channel estimation performance, or lead to limited uplink coverage
In addition, when the uplink DFT-s-OFDM and DMRS waveforms use π/2, BPSK modulation, and filters are used, if the uplink DFT-s-OFDM and DMRS waveforms use Gold sequence-based sequences or CGS, if the Appropriate screening will lead to poor frequency flatness of the sequence, which is not conducive to channel e...

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[0259] The technical solution in this application will be described below with reference to the accompanying drawings.

[0260]The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: global system for mobile communications (GSM) system, code division multiple access (code division multiple access, CDMA) system, wideband code division multiple access (wideband code division multiple access (WCDMA) system, general packet radio service (general packet radio service, GPRS), long term evolution (long termevolution, LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (time division duplex, TDD), universal mobile telecommunication system (universal mobile telecommunication system, UMTS), global interconnection microwave access (worldwide interoperability for microwave access, WiMAX) communication system, future fifth generation (5th generation, 5G) system or new Wireless (new rad...

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Abstract

The invention provides a signal processing method and device. The method comprises the step that in frequency domain resources of a comb tooth structure, reference signals mapped on the frequency domain resources of different comb teeth can be generated by different sequences. That is to say, the reference signals on different frequency domain resources can be generated by adopting different sequences, so that the performance of the reference signals transmitted on the frequency domain resources of the whole comb tooth structure is improved.

Description

technical field [0001] The present application relates to a communication system, and more specifically, to a signal processing method and device. Background technique [0002] In a long term evolution (long term evolution, LTE) system, a physical uplink shared channel (physical uplink shared channel, PUSCH) and a PUCCH use a demodulation reference signal (demodulation reference signal, DMRS) for channel estimation, thereby performing signal demodulation. In the LTE system, the base sequence of the uplink DMRS can be directly mapped to resource elements without any coding process. In LTE, the uplink DMRS reference sequence is defined as the cyclic shift of the basic sequence, and the basic sequence of the uplink DMRS is obtained by cyclic expansion of Zadoff-Chu sequence (ZC sequence). The ZC sequence is a sequence that satisfies the property of a constant envelope zero autocorrelation (CAZAC) sequence. [0003] In the new radio access technology (new radio access technolo...

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Application Information

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IPC IPC(8): H04L5/00H04L5/02
CPCH04L5/001H04L5/0048H04L5/023H04L27/18H04L5/0051H04L5/0005H04L5/0007H04L27/26134H04L27/2636H04L27/262H04L25/0204H04L25/0226H04L25/0228H04L27/26025H04L27/20H04L27/261
Inventor 曲秉玉刘显达龚名新刘鹍鹏
Owner HUAWEI TECH CO LTD
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