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Improved PTS method

An adder and phase factor technology, applied in the field of communication, can solve problems such as high computational complexity

Inactive Publication Date: 2006-12-13
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0005] The main shortcoming of the existing PTS method is that it needs to m(m represents the number of clusters of phase factors used in the system working process, it can be seen that m≤U V ) cluster phase factors to perform corresponding calculations respectively, and the calculation complexity is relatively high

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Embodiment Construction

[0030] The main innovation of the present invention is to predetermine a threshold, and compare the PAPR of the data corresponding to the phase factors of m clusters with the threshold one by one, thereby selecting the suboptimal phase factor. The threshold comparison and selection module 6 can be realized by programming, and can be made into corresponding hardware by using the existing technology, and then combined with other modules to form the whole system of the present invention.

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Abstract

An improved PTS method, in the module 6 for threshold comparison and selection, preset a threshold, compare the relevant data PAPR of phase factor of m cluster with this thresholds one by one, once the data PAPR is lower than or equal the threshold, the phase factor corresponding to this data becomes the side information of second-best phase factor, make this second-best phase factor doing multiplication, overlap, output with each relevant group of data, meanwhile output the side information about second-best phase factor. Adopting this communication method either can reduce the ratio between the peak power of the signal and average power, or decrease the complexity of calculation.

Description

technical field [0001] The invention belongs to the technical field of communication, in particular to an Orthogonal Frequency Division Multiple Access system. Background technique [0002] As we all know, in the existing communication technology, Orthogonal Frequency Division Multiple Access (OFDM) technology has become the future mobile multimedia communication technology because of its high spectrum utilization rate, good anti-multipath fading and anti-interference performance. one of the main candidate technologies. [0003] OFDM signal has the disadvantage of high peak power to average power ratio (Peak-to-average Power, referred to as PAPR), and is very sensitive to nonlinearity, which requires the high-power amplifier of the transmitter to have a large linear range. However, relatively Power devices with a large dynamic range mean higher costs. Moreover, when an OFDM signal exceeding the linear dynamic range passes through a linear device such as a power amplifier, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J11/00H04L27/32H04B1/02
CPCY02B60/33Y02D30/50
Inventor 肖悦雷霞唐友喜李少谦
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA