TH41780A - Main station equipment and methods of radio wave communication. - Google Patents

Abstract

DC60 (20/08/42) The signal received through antennas 101-1 to 101-N is fed into the weighting coefficient calculation section 103. Weighting coefficient calculation section 103 determines the weighting coefficients to eliminate interference by using the signal received through antennas 101-1 to 101-N and a known signal, and combining them into a weighted/combined signal 107. Waveform change detection section 116 detects waveform changes in the weighted/combined signal. Interference mixing time detection section 108 detects the interference mixing time from the output of waveform change detection section 116. Waveform change detection sections 117 to 119 detect waveform changes in the received signal. Integration control section 113 acts on switch section 114 to ensure that the received signal with the least waveform change is emitted. At the interference mixing time, the signal received through air 101-1 to 101-N is fed into the weighting coefficient calculation section 103. The weighting coefficient calculation section 103 determines the weighting coefficients to eliminate interference by using the signal received through air 101-1 to 101-N and the known signal, and combines them into a weighted/combined signal 107. The waveform change detection section 116 detects waveform changes in the weighted/combined signal. The interference mixing time detection section 108 detects the interference mixing time from the output of the waveform change detection section 116. Waveform change detection sections 117 to 119 detect waveform changes in the received signal. The integration control section 113 acts on switch section 114 so that the received signal with the least waveform change is output at the interference mixing time.

Claims (22)

1. The main station equipment consists of: a timing detector, which detects the timing at which interference signals are mixed with the desired signal as it passes through a group of antennas; and a selector, which chooses at least one antenna that is least affected by interference from among such antenna groups after the timing and outputs the signal received through at least one of those antennas. 2. The main station equipment under claim 1 subsequently includes a combining circuit which weights the signals received through a group of antennas and combines these received signals into a combined signal. 3. The main station device under claim 2 is of the type where the timing detector detects the timing of interference modulation based on changes in the waveform of the combined signal. 4. The main station device under claim 2 is of the type where the timing detector detects the timing of interference modulation based on grouping changes on the IQ plane of the aggregate signal. 5. The base station equipment under claim 1 is of the type in which the selector chooses at least one antenna that is minimally affected by interference in response to changes in the waveform of the received signal. 6. The main station equipment under claim 1 is of the type in which the selector chooses at least one antenna that is least affected by interference based on changes in grouping on the IQ plane of the received signal. 7. The main station device under claim 3 shall subsequently include a delay detector which will establish a delay detection process on the signal prior to detecting changes in the waveform frame or grouping. 8. The base station equipment under claim 1 is of the type in which the received signal consists of time-divided frames that are groups of blocks. 9. The main station equipment under claim 1 is of the type that detects modulation timing and estimates the time at which interference signals are modulated based on interference modulation timing information detected on a group of past frames of the received signal. 10. The main station equipment under claim 9 is of the type in which the communication performs time-based signal mixing, interference of the error-free frame of the received signal is separated when the approximation is created. 11. The main station equipment under Claim 1 subsequently includes an error detector which detects errors in the signal received through the airwaves, where the selected signal at this detection section is found to be free of errors. 12. The main station equipment under claim 11 is of a type in which the error detector stores the results of the calculation using the CRC function for storing the CRC calculation information on the signal received before the elapsed time and regenerates the calculation from the result of the storage after the elapsed time. 13. Radio wave communication methods consist of the following steps: detecting the time at which interference signals are mixed with the desired signal of the received signal through a group of antennas; and selecting at least one antenna that is less affected by interference from among the groups of such antennas after the aforementioned time and transmitting the signal received through at least one of those antennas. 14. The radio communication method under claim 13 consists of the steps of weighting the received signals through a group of antennas and combining these received signals into a combined signal. 15. The radio communication method under claim 13 is one in which the detection procedure for interference modulation is time-dependent on changes in the signal frame. 16. The radio wave communication method under Claim 14 is such that the timing detection procedure detects timing changes in the interference signal grouping IQ process of the combined signal. 17. The radio communication method under Claim 13 is such that the selection process chooses at least one antenna that is least affected by interference in response to changes in the waveform of the received signal. 18. The radio communication method under Claim 13 is such that the selection process chooses at least one antenna least affected by interference based on changes in association on the IQ plane of the received signal. 19. The radio communication method under claim 15 consists of steps for establishing a delay detection process on the signal prior to detecting changes in the waveform or grouping. 20. The radio communication method under Claim 13 is such that the time-detection procedure estimates the time at which interference is modulated based on the time-detection information. The interference is detected on a group of past frames of the received signal. 21. The radio communication method under claim 13 is followed by a procedure for detecting errors in the signal received through a group of antennas, where the selected signal is detected as having no errors. 22. The radio wave communication method under claim 21 is such that the error detection procedure stores information in the CRC calculation on the receiving signal prior to the aforementioned time and constructs a calculation using information stored after the aforementioned time.