Time- and frequency-domain unified single carrier modulation signal transmission method

A single-carrier modulation and signal transmission technology, applied in the field of digital information transmission, can solve problems such as high algorithm complexity, difficult synchronization, channel estimation and equalization, etc., and achieve accurate channel response estimation, excellent performance, and low complexity Effect
CN101986631AInactive Publication Date: 2011-03-16TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2011-03-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a time- and frequency-domain unified single carrier modulation (TFU-SCM) signal transmission method, and belongs to the technical field of digital information transmission. The method comprises that: information generated by a sending end is subjected to source coding, channel coding and constellation mapping in turn to form mapped information; the mapped information is subjected to time- and frequency-domain unified single carrier modulation FU-SCM modulation, and a plurality of modulated symbols form a frame signal to be sent; the received frame signal is split into a TFU-SCM modulation symbols in a corresponding composition mode; and the modulation symbols are subjected to TFU-SCM demodulation to form serial data, and the serial data is subjected to constellation inverse mapping, channel decoding and source decoding in turn to form the original information. The method maintains the advantage of low complexity of the sending end of the single carrier frequency domain equalization (SC-FDE) technology, the number of UW in the pilot frequency can be flexibly selected according to requirement on system performance, operation such as synchronization, channel estimation, balance and the like can be convenient to carry out at a receiving end by operating the pilot frequency in the frequency domain, the processing efficiency of the system is improved, and the method is more suitable for a broadband wireless mobile communication system.
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Description

technical field

[0001] The invention belongs to the technical field of digital information transmission, and in particular relates to a single-carrier modulation technology in a broadband wireless mobile communication system. Background technique

[0002] In a broadband wireless mobile communication system, the transmitted signal is often affected by occlusion, absorption, reflection, refraction and diffraction caused by various objects in the environment during the propagation process, forming multiple path signal components to reach the receiver. The signal components of different paths have different propagation delays, phases and amplitudes, and channel noise is added, and their superposition will make the composite signal cancel or enhance each other, resulting in severe fading. This fading will distort the received signal of the receiver and reduce the reliability of communication. In addition, if the transmitter or the receiver is in a relatively moving state, the re...

Claims

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