Fujitsu Corporation

Sap Se

Telefonaktiebolaget Lm Ericsson (publ)

Beijing Baidu Netcom Science Technology Co., Ltd

Zhan Shi

Hui Li

Jianmin Zhou

Gang Sun

Wen-Syan Li

Takanori Iwamatsu

Yu Cheng

Jian Zhou

Gufei Sun

Zhiqi Wang

Wei Bai

Tao Li

Yi Ke Wu

Pei Chen

Zhiwei Liu

A code reuse processing method, apparatus and electronic device related to a software development technology in the technical field of computers. The method includes: receiving a target request sent by a client of a target unit; in response to the target request, determining a first code line quantity per capita submitted within a target unit time and a reuse code base of the target unit used by a first code base in a dependency manner, the first code base is a code base except the reuse code base; determining reference information configured to indicate an amount of labor capable of being saved for the target unit when the target unit performs a code reuse within a target duration, the reference information based on the first code line quantity, a code line quantity of the reuse code base and a preset reuse proportion; and outputting the reference information to the client.

Code reuse processing method, apparatus and electronic device

The present disclosure includes systems and methods for configuring a radio base station of a cellular telecommunications network. An exemplary method includes receiving an instantaneous bandwidth (IBW) capability list from a radio unit that is coupled to an antenna and transmitting a control message to the radio unit to configure radio carriers for the radio unit. The control message is based on the IBW capability list. Associated network nodes are also included.

Carrier harmonization for RF performance optimization

Disclosed herein are technologies for providing recommendations as to particular products and/or services that are customer specific and general, based on customer preference and inquiry. The recommendations are provided as part of an online shopping system. In accordance with one aspect, an item query is received from a customer, and analyzed by a query analyzer to determine if the query is a general item query or a specific item query. A search may be performed for items based on the item query in an items database listing items offered for purchase. If the query is the general item query, customer preference is determined from results of the search. If the query is the specific item query, the items from the results of the search are grouped based on cost performance. The items of the search result are ranked and provided to the customer.

Method, system, and computer-readable medium for product and vendor selection

A digital predistortion apparatus comprising: a nonlinear device; a memory effect compensator; a constant value characteristic acquirer; a cost function generator; and a coefficient updater is described.

Digital predistortion apparatus and method

The embodiments of the present invention provide a predistortion device, method for predistortion and transmitter/receiver system. The predistortion device comprises a predistortion unit, and the predistortion device further comprises: a signal acquiring unit to process the output signals of a transmitting circuit to obtain distorted signals; a signal coupling unit to couple the distorted signals acquired by the signal acquiring unit to the receiving signals inputted to a receiving circuit; and a signal processing unit to decouple the output signals of the receiving circuit to acquire the distorted signals and the receiving signals. With the embodiments of the present invention, an analog receiving circuit may be reused in a half duplexing system and a full duplexing system, and the requirement on the analog receiving circuit is lowered, thereby reducing the cost.

Predistortion device, method for predistortion, and transmitter/receiver system that reuse an analog receiving circuit in a half duplexing system and a full duplexing system, and that reduce the requirement on the analog receiving circuit

An embodiment of the invention discloses a power amplification device and method and a method for acquiring a power adjusting coefficient. The power amplification device according to one embodiment of the invention includes: a power control module configured to perform power adjusting on an input signal; a power amplification module configured to perform power amplification on the signal subjected to the power adjusting by the power control module; and a pre-distortion module configured to compensate for nonlinear characteristic of the power amplification module; wherein, said power control module is coupled between said pre-distortion module and said power amplification module in series; alternatively, said pre-distortion module is coupled between said power control module and said power amplification module in series. With the embodiment of the invention, a transmitter can be provided with a spectrum including a low side lobe even upon startup.

Power amplification device and method for acquiring power adjusting coefficient

This invention relates to an amplifier device and a predistortion control method. The amplifier device comprises a predistortion unit, a predistortion control unit, and an amplifier unit, of which the predistortion control unit controls the predistortion unit in accordance with a signal fed back from the amplifier unit. The predistortion control method comprises determining power of a left side lobe of two side lobes of a frequency spectrum of the signal fed back from the amplifier unit; determining power of a right side lobe of two side lobes of a frequency spectrum of the signal fed back from the amplifier unit; determining a cost function in accordance with the power of the first and right side lobes, and controlling the predistortion unit in accordance with the cost function.

Amplifier device and predistortion control method

An adaptive digital predistortion device and method, the adaptive digital predistortion device including a predistortion unit for predistorting an input signal according to a predistortion parameter stored in a look-up table; a cost function generation unit for generating a cost function; a fixed segment point determination unit for determining a fixed segment point; and an update unit for updating parameters (u, u, k) according to the cost function to update the look-up table based on the updated parameters (u, u, k), wherein kis an updated adaptive segment point, uand uare slopes on two sides of the adaptive segment point ka; and for subsequently updating parameters (v, v) according to the cost function to update the look-up table based on the updated parameters (v, v) and the fixed segment point, wherein vand vare slopes on two sides of the fixed segment point. Therefore, the adaptive digital predistortion device according to the present invention can obtain a good performance within an acceptable convergence time by combining the adaptive segment with the fixed segment.

Adaptive digital predistortion device and method

This invention relates to a nonlinear degree measuring apparatus and method for a power amplifier, and a predistortion compensation apparatus. The nonlinear degree measuring apparatus comprises a delayer (), for delaying inputted pilot frequency data; a subtracter (), for subtracting, from the pilot frequency data delayed by the delayer, subsequently inputted pilot frequency data; a power calculating unit (), for calculating an instantaneous power of an outputted signal from the subtracter (); and an averager (), for averaging the instantaneous power calculated by the power calculating unit () to obtain an averaged power.

Nonlinear degree measuring apparatus and method for a power amplifier, predistortion compensation apparatus

This invention relates to a predistorter, a predistortion method, and a predistortion system. The predistorter comprises a modulus value determining section, for determining a modulus value of an input signal; a base searching section, for searching a predetermined base lookup table in accordance with the modulus value of the input signal, so as to obtain a base lookup table value; an offset searching section, for searching a predetermined offset lookup table in accordance with the modulus value of the input signal, so as to obtain an offset lookup table value; an interpolation factor generating section, for generating an interpolation factor in accordance with the modulus value of the input signal; a multiplying section, for multiplying the offset lookup table value with the interpolation factor; and a summating section, for adding a product obtained by the multiplying section to the base lookup table value, so as to obtain a predistortion value.

Predistorter, predistortion method, and predistortion system

The present invention discloses a baseband predistorter and baseband predistortion method. The baseband predistorter comprising: an address generator for calculating an address of a phase basic lookup table and an address of an amplitude basic lookup table; a parameter determining unit for determining a phase translational amount, an amplitude translational amount, a phase curvature adjustment amount and an amplitude curvature adjustment amount; a phase translating unit for changing the address in accordance with the phase translational amount; an amplitude translating unit for changing the address in accordance with the amplitude translational amount; a phase basic lookup table searching section for determining a corresponding phase output; an amplitude basic lookup table searching section, for determining a corresponding amplitude output; a phase curvature adjusting section, for adjusting the phase output; and an amplitude curvature adjusting section, for adjusting the amplitude output.

Baseband predistortion device and method

The present invention discloses a predistortion apparatus, a predistortion system and a predistortion method. The predistorter comprises a modular value calculating section, for performing modular arithmetic on an information source input signal inputted from an information source; an orthogonal lookup table value acquiring section, for searching N stored lookup tables orthogonal to one another, finding out corresponding output of each lookup table in accordance with the modular value of the information source input signal, and acquiring N lookup table values, wherein N is an integer greater than 1; a multiplying section, for multiplying the N lookup table values acquired by the orthogonal lookup table value acquiring section with N amplitude adjustment factors to obtain N amplitude adjustment values, and multiplying the N lookup table values with N phase adjustment factors to obtain N phase adjustment values; and a summating section, for summating the N amplitude adjustment values to obtain an amplitude predistortion value, and summating the N phase adjustment values to obtain a phase predistortion value.

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Beijing, China

Zhan Shi