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Carrier synchronization pulse ultra wide-band radio frequency modulation device

A carrier synchronization and ultra-wideband technology, applied in the field of communication, can solve the problems of unbearable complexity and difficulty in obtaining channel estimation performance, and achieve the effects of improving overall transmission performance, increasing spectrum utilization, and reducing complexity

Inactive Publication Date: 2010-04-07
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

Since the number of UWB indoor channel multipaths can reach more than 100 (including about 85% energy), it is difficult for conventional channel estimation algorithms to obtain ideal channel estimation performance, or its implementation complexity is unbearable; using the transmission-reference (TR, TransmittedReference) mechanism can Accurate channel estimation and coherent reception of UWB signals with Rake receiver

Method used

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  • Carrier synchronization pulse ultra wide-band radio frequency modulation device
  • Carrier synchronization pulse ultra wide-band radio frequency modulation device
  • Carrier synchronization pulse ultra wide-band radio frequency modulation device

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Embodiment Construction

[0025] The invention mainly proposes a carrier synchronization ultra-wideband signal modulation scheme. Compared with the classic ultra-wideband modulation mechanism based on narrow pulses, the present invention further introduces carrier cycle modulation on the basis of time-hopping modulation, so that the information carried in the ultra-wideband transmission signal and the modulation information are accurately synchronized with the carrier signal. The receiving end uses a phase-locked loop (Phase Lock Loop, PLL) to accurately extract the synchronization information to provide precise timing signals for ultra-wideband correlation decoding, which greatly reduces the algorithm complexity and hardware implementation difficulty of ultra-wideband synchronous capture, and effectively improves system reception. performance.

[0026] The specific steps of the carrier synchronous UWB modulation method are summarized as follows:

[0027] 1) The sender generates a periodic impulse seq...

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Abstract

The invention discloses a scheme for implementing carrier synchronization ultra wide-band (CS-UWB) signals. In the scheme, a UWB system comprises a time-hopping phase modulation module, a pulse formation module, a carrier modulation module and a filter module. By providing a CS-UWB implementation method capable of conducting the time-hopping / cycle synchronized modulation on information sequences and thus generating CS-UWB sending signals, the invention can greatly reduce the complexity of synchronization algorithms at a receiving terminal, improve the receiving performance of the UWB system and can be widely applied to the field of short-distance wireless communication.

Description

technical field [0001] Based on the carrier cycle modulation (Carrier Cycle Modulation) technology, the present invention proposes a carrier synchronization ultra wide-band (CS-UWB, Carrier Synchronization Ultra Wide-band) signal radio frequency implementation scheme, which belongs to the communication field. Background technique [0002] Ultra-wideband technology is a new type of wireless communication technology that uses spectrum resources in a overlapping manner. Its transmission signal bandwidth can be as high as several gigahertz (GHz), so its time-domain signal has extremely strong multipath resolution. In short-distance wireless personal It has great application potential in communication (WPAN, Wireless Personal Local Network). At present, IEEE has promulgated relevant standards for many UWB application scenarios, including the high-speed wireless personal area network standard IEEE802. WBAN, Wireless Body Area Network). In essence, UWB technology belongs to a spe...

Claims

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Application Information

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IPC IPC(8): H04B1/69H04B1/7183
Inventor 周正李斌孙璇吴琼
Owner BEIJING UNIV OF POSTS & TELECOMM
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