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Signal processing method and system for ultra wideband zero-intermediate frequency receiver

A zero-IF receiver and signal processing technology, which is applied in the transmission system, digital transmission system, electrical components, etc., can solve the problems of baseband signal-to-noise ratio decrease, transmission energy consumption increase, etc., and achieve the effect of ensuring the bit error rate performance

Active Publication Date: 2013-05-22
TSINGHUA UNIV
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Problems solved by technology

However, the ultra-wideband zero-IF receiver also has its disadvantages: because the 1 / f noise of the zero-IF down-conversion method will overlap with the complex baseband signal spectrum, the closer to the signal baseband zero frequency (DC) point, the stronger the noise, so 1 / f mixer noise will cause the signal-to-noise ratio of the receiver's baseband signal to drop significantly
The PAPR problem makes the launch energy consumption increase by ten times

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  • Signal processing method and system for ultra wideband zero-intermediate frequency receiver
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  • Signal processing method and system for ultra wideband zero-intermediate frequency receiver

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[0039] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0040] refer to figure 1 , which shows a flow chart of an embodiment of a signal processing method for an ultra-wideband zero-IF receiver of the present invention, including:

[0041] Step 101, encoding the signal sent by the source; the encoding is an encoding in which the difference between the number of "1" and "0" in the code word is not greater than 2;

[0042] The signal processing in the embodiments of the present invention is mainly used in ultra-wideband transmission or situations where the communication channel bandwidth exceeds 10 MHz. First of all, it is necessary to encode the signal to be sent. The signal is the baseband signal sent by the source. The encoding method of the baseband signal is an encoding with a rela...

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Abstract

The invention provides a signal processing method and system for an ultra wideband zero-intermediate frequency receiver. The method comprises the following steps of: encoding a signal sent by a signal source, wherein the quantity difference between codes 1 and 0 is not greater than 2 during encoding; performing emission pretreatment on the signal, and sending the signal to the receiver; performing receiving pretreatment on the signal, and decoding the signal after receiving pretreatment. The invention eliminates a zero-power spectrum component of a single carrier wave, avoids the cross-symbolinterference caused by a high-pass wave filter, and also ensures that the energy consumption of an emitting end is not increased.

Description

technical field [0001] The invention relates to the technical field of ultra-wideband communication, in particular to a signal processing method and system for an ultra-wideband zero-IF receiver. Background technique [0002] Ultra-broadband technology is currently the most competitive short-distance high-space capacity (communication volume / square meter) of a new type of wireless technology. It is expected to be used in wireless local area network (WLAN), wireless personal area network (WPAN), There are broad application prospects in many fields such as multimedia home network, security and military affairs. Ultra-wideband systems can share frequency bands, and research suggests that this technology can work simultaneously with other narrowband systems. UWB communication technology is a non-traditional and novel wireless transmission technology, which usually uses an extremely wide frequency spectrum (relative bandwidth greater than 20% or absolute bandwidth greater than 5...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/30H04L1/00
Inventor 葛宁裴玉奎朱亮陆建华闻武杰肖振宇
Owner TSINGHUA UNIV
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