31 results about "Effective radiated power" patented technology

A wireless communication network can reliably deliver high priority broadcast information from base stations to mobile terminals located deep in building and those located in scarcely populated areas that are remote from the base stations. Each of the base stations of the wireless communication network comprises a broadcast information input unit for receiving high priority broadcast information and a transmission power changing unit for changing the transmission power of the downlink common channel when high priority broadcast information is input to it. As broadcast information is input, the transmission power changing unit changes the transmission power of the downlink common channel so as to boost the effective radiation power used by the downlink common channel of the base station at places in the coverage of the base station that are subjected to a propagation loss. The effective radiation power to the mobile terminals located at places in the coverage of the base station that are subjected to propagation loss is boosted to raise the reception level of the mobile terminals located at such places.

The method picks up data needed for correcting model by using data of tested forward received power in test data of actual network. Treating data includes following steps: accounting information of latitude and longitude of transmitting site in each subzone within network, transmitting power and antenna parameter of each subzone; calculating effective radiated power in each direction for each subzone, and distance between test point and transmitting site in each subzone; fitting of multielement non-linear regression method is utilized so as to obtain parameters of propagation model. Comparing with prior art, the invention uses tested data to correct model, omitting a series of works such as selecting station site, erecting antenna, driving cars for testing etc. The invention saves time, raises work efficiency providing model with high precision, and good portability.

The invention provides a configurable multiple-valued matching field analysis method. According to the method, field association rules can be flexibly set; according to the set field association rules, the data is automatically checked when being imported, and whether the input data has error or not can be checked; if the data has error, prompt is carried out, so that the data wanted by a user can be accurately imported. The configurable multiple-valued matching field analysis method can be applied to an import facility of an effective radiated power (ERP) product, and is suitable for importing some special fields having multiple-valued matching conditions. After the special rules are set, the unique value can be determined when the multiple-valued matching field is imported, so that the accuracy of the imported data can be guaranteed.

A method for analyzing the working performance of a damaged satellite-to-ground data transmission antenna, (1) calculate the satellite effective transmission power EIRP according to the satellite transmitter output power, satellite antenna gain and transmission channel loss; (2) calculate the satellite effective transmission power EIRP according to the average ground height of the satellite Calculate the maximum slant distance R of signal transmission with the lowest elevation angle of the ground receiving antenna; (3) calculate the free space loss Lf of the signal according to the downlink carrier frequency and R of the satellite data transmission signal; (4) calculate the signal free space loss Lf according to the atmospheric loss, receiving antenna pointing loss, receiving Antenna polarization loss and rain attenuation value and Lf calculate the whole transmission loss L of the digital transmission signal; (5) Utilize coding gain, transmission code rate, coding rate and link margin to calculate the bit signal-to-noise ratio of the received signal; (6) According to the bit error rate requirements, calculate the bit signal-to-noise ratio actually required by the received signal, and then obtain the channel margin. If the margin is positive, the overall performance of the data transmission antenna can still meet the system requirements after the damage. Otherwise, the data transmission antenna is damaged. After work performance is affected.

Disclosed are a method and system for testing mobile terminal WiFi OTA. The method comprises: measuring the effective radiated power of a mobile terminal in each position, and on the basis of same, forming a pattern of effective radiated power; determining, on the basis of the pattern of effective radiated power, a first position corresponding to the time of strongest effective radiated power, and measuring a first effective radiated sensitivity ERSbest of the mobile terminal in said first position; calculating a second effective radiated sensitivity ERS in each remaining second position, on the basis of the following relation: ERS=ERS best +(ERP best −ERP), wherein ERPbest is the effective radiated power of the first position, and ERP is the effective radiated power of each remaining second position; and finding the integral sum of the measured first effective radiated sensitivity ERSbest and the calculated second effective radiated sensitivity in order to obtain the isotropic sensitivity of the mobile terminal. The present invention thereby improves testing efficiency.