TH17835B - Discrete CDMA reception - Google Patents

Abstract

Cellular radio telephone systems use discrete transmission and reception. Speech to preserve the receiver's processing resources The frame structure is forced Onto the speech data that is converted to numerical To divide the data into units with constant transmission time, when there is no speech present for the entire length of the frame, the transmission of that data frame is suppressed. At the receiver Decoding of the received bits is performed. To determine the correlation with the defined set of code values If no correlation is found after a few The first received bit of the frame Due to the absence of voice data Decoding will be stopped For the rest of the frame length This approach will leave the resources of Free receiver for other jobs Like decoding of other signals to be received, frames of data from different sources are transmitted with a time alignment defined to be turned on via the receiver. To remain in rhythm when no information is sent. Frames related to different sources will be Shifted against each other to distribute the processing load on the receiver.

Claims (5)

1. Improved transmitter for radiated multi-way radio communication signals, which includes a numerical speech converter for speech signals, which includes: A path for composing a numbered speech from the Speech to Number Converter. Is a fixed frame corresponding to the fixed total number of symbols. A method for creating a visualization of events for each fixed frame that contains the speech and voice activity. Method for suppressing the transmitter when inactivity and for restarting the transmitter, at a fixed frame time specified by the activity display only 2. The transmitter is adjusted according to claim 1 where the frame is included. Speech symbols The number is fixed and each frame is included with one or more known symbols which are always sent, the known symbol shows the receiver whether the rest of the frame is sent or not. 3. The transmitter is adjusted according to the claim. At 1, where a certain amount of radio signals are added with the value Controlled multiplication weighted for transmission by a single transmitter's combined amplifier and antennas. Together, each radio signal can be stopped in a fixed frame containing a period corresponding to the number of The total number of spectral code units is distributed 4. The transmitters are adjusted according to claim 3, where a frame is fixed for each signal. Some of the above have a fixed time alignment relative to each other. 5. Transmitter adjusted according to claim 4, where such constant time alignment when The comparison will then be shifted between the said signals. 6. Receptors adjusted according to claim 5, where the modified receiver maintains access. The timing with the transmitter between the transmission frames was stopped by the signal demodulation aimed for the machine. 7. Improved receiver for coded multi-access radio communication. Spread spectrum which includes A method for determining whether or not the transmitter has stopped transmitting at a fixed frame. The advance only which corresponds to the frame of the speech symbol at the input of the speech decoder, and Path, responds to a decision path, for making the receiver implicitly transmit audio When it is judged that the interruption of activity from the transmitter, 8. The receiver is modified according to claim 7, where, when the interruption of the transmitter is detected The signal is transmitted, the receiver will not attempt to decode that signal until the beginning of a fixed frame. 9. The receiver has been modified according to claim 8 for receiving multiple radio communications. Simultaneous signals where they are demodulated and decoded as units of code symbols. Radiates a constant and decreasing sequence of historically predicted relative signal strength until The required preconfigured signal was demodulated and decoded 1.0. The receiver was enhanced according to claim No. 9, with further attempts to decode. A signal with a predetermined spread code is terminated for the remainder of the code symbol. Such a fixed number when the aforementioned signal does not reach the expected signal strength change start 1. 1. The receiver adjusted according to claim 10, where the frame is fixed for different signals. It starts at different predictive times and attempts to demodulate and decode one signal. It will not restart at the same time as other signals 1 2. Receiver updated according to claim 7, where the implicit sound is output. When the interruption of new information from the transmitter is based on the previously received data from the transmitter 1. 3. The receiver is updated according to claim 7, whereby the method decides whether the transmission End Does the receiver end or start over at the fixed frame boundary? 1 4. Receiver modified according to claim 7 where the receiver decodes the new frame. And stop decoding, if after a certain number of symbols predetermined that no signal has been found, and The receiver will not restart decoding until after the beginning of the next frame, the number of Continuity of symbol 1 5. Receiver modified according to claim 7, where known symbols are used to determine Whether the receiver tries to decode all frames or stop decoding until the next frame when Known symbols will be sent next: 1. 6. The receiver has been modified according to Clause 15, where the known symbol was sent. The receiver is used by such a receiver to establish a clear reference for the modulation 1 7. The receiver is modified in accordance with claim 15, where the known transmitted symbol. It is used by such receivers to estimate the impulse response of communication channels. 1. Improved radio communication system, including an enhanced transmitter for radio signals. Multi-Access Spectrum-coded Multi-Access, which includes a numerical speech converter for speech signals, and an enhanced receiver with speech decoder, for receiving multiple access radio communications signals. Code-break way, where improvements include The method for framing the speech converter's output signal is numbered as a fixed frame that equates to Implications for a fixed total number of speech signals. The path for creating an activity display for each fixed frame. A path for suppressing transmission of such a fixed frame of the symbol when inactivity is indicated. And for restarting transmission for all fixed frames specified by displaying such activity only, the path for judging the receiver whether the transmitter has or did not inhibit transmission of fixed frames, and trajectory. Way, responding to a decision path, for making the receiver implicitly transmit audio When it is decided that the transmission of the frame is interrupted 1 9. The communication system has been improved pursuant to Clause 18, transmission terminates or resumes at Fixed frame scope only 2 0. Communication system improved according to claim 18 where overlapping radio communication signals Over the same frequency, the shifting frame is aligned, so that its respective momentum for the end. The end or start of transmission is not transmitted at the same moment, but is distributed over time. Frame 2 1. Communication system improved according to claim 12 where radio communication signals are overlapped. Over the same frequency, shifting frames are aligned, each frame has at least one symbol at Note, so that the symbols known in their respective order are not transmitted at the same moment, but are distributed over time frame 2. 2. The communication system is improved according to Clause 12 where the modified transmitter is The updated receiver is placed in the cellular base station and the improved receiver is placed in the mobile station 2. 3. Improved communication system according to claim 22, whereby the mobile station transmitters are located in the cellular base station. Consider the time alignment of the frame for transmission based on the alignment of the received frame, from the machine. Transmission of base station 2. 4. Communication system improved according to claim 18, where the modified receiver was Aligned in a cellular base station and the improved transmitter was placed in a mobile station 2. 5. Improved radio communication system incorporating an improved transmitter for transmission. Radio communication with a numerical speech converter for speech signals, and an enhanced receiver. For receiving radio communication signals with a speech decoder, where improvements are included. A path for framing the numbered speech from the Speech to Number Converter. A fixed frame that corresponds to the fixed total number of bits. A path for creating an activity display for each fixed frame based on a speech activity, a path for stopping the transmitter when there is no activity, and for restarting the transmitter at Fixed frames that are specified only by the activity display. A method for determining whether or not the transmitter has stopped transmitting at a fixed frame. The advance only that corresponds to the frame of the incoming speech bits of the speech decoder, and Path, responds to a decision path, for making the receiver implicitly transmit audio When it is judged that the interruption of activity from the transmitter 2 6. Methods for communicating speech information in cellular radio telephone systems, which comprise the Combined with the procedure of The numerical conversion of the speech signal and dividing the numbered signal into a frame with Preset length Detecting whether the voice signal replaces the existing speech. The coding of the digitized signal with communication-related codes. Transmitting the encrypted signal to the receiver Suppression of the transmission of the frame of the encoded signal when the relevant speech segment With that frame, not a replacement for the sound of the sound Reception that is transmitted to the receiver Decoding the received signal, relative to the said communication code, at the beginning of the frame. Signal to obtain numerical information Determining whether the numerical data has reached the lowest correlation threshold Decoding of the received signal for the remainder of the frame continues if the numerical data meet the threshold. Change correlation and Suppression of the decoding of the received signal for the rest of the frame, compared to the media code. Such message, when numerical data does not reach the threshold of correlation 2 7. Method of claim No. 26 where such communication code is combined with a code labeled with a symbol. A predefined number, and where each of those frames includes all the numbers The number of precedents of such a certain number of symbols 2. 8. Method of claim 26, which also includes the process of initiating decryption. A new received signal, relative to the said communication code, at the beginning of the received frame in the next signal After such decoding suppression for the remainder of the previous frame 2 9. Methods for transferring speech communication from base station to mobile unit accordingly. Sequence in a cellular radio telephone system, which includes the steps of Transformation of a number of speech signals is numerical and divides each signal that is converted into a numerical one. Numbers are frames with a predefined length. Detecting whether each voice signal represents the sound of the active speech Encoding each signal that is numerically converted to a code associated with a moving unit, which The audio signal is spoken in order of heading. Suppression of the transmission of each frame of each encoded signal that is not related to the being spoken. The combined reception that is transmitted to the receiver. Decoding of the combined signal received, against one such communication code, at the beginning Of the frame to obtain numerical data. Determining whether the numerical data has reached the lowest correlation threshold Decoding of a received signal against one such code for the rest of the frames. If the numerical data finds the threshold, changes correlation and Suppression of the decoding of the received signal for the rest of the frame, compared to one code The code, when numerical data does not reach the threshold, changes correlation 3 0. Method of claim No. 29, which also includes the process of decoding the received signal. Against the second code at the beginning of the signal frame associated with that second code 3. 1. Method of claim No. 29, whereby all frames of signals are numerically converted to There is a preset time alignment relative to the other 3. 2. Method of claim 31 whereby the frames of each signal are numerically converted according to The sequence is offset by a predetermined quantity relative to each signal's frame converted to a different number 3. 3.Methods for transmitting speech information in cellular radio telephone systems, which include: With the steps of The numerical conversion of the speech signal and dividing the numbered signal into a frame with Preset length Detecting whether the voice signal replaces the existing speech. The coding of the digitized signal with communication-related codes. Transmission of the encrypted signal to the receiver and Suppression of transmission of the entire frame of the encoded signal when the relevant speech segment With that frame, not a replacement for the sound of speech that is currently being spoken. 4.Methods for communicating speech information in cellular radio telephone systems, which comprise Combined with the procedure of The numerical conversion of the speech signal and dividing the numbered signal into a frame with Pre-determined length Detecting whether the voice signal replaces the existing speech. The coding of the digitized signal with communication-related codes. Transmitting the encrypted signal to the receiver Suppression of the transmission of the frame of the encoded signal when the relevant speech segment With that frame, not a replacement for the sound of the sound Reception that is transmitted to the receiver Decoding the received signal, relative to the said communication code, at the beginning of the frame. Signal to obtain numerical information Considering that the numerical information corresponds to the symbol representing sound activity. Does it say or show that there is no sound? The decoding of the received signal continues if such numerical data is consistent with the expression of speech activity and the decoding of the received signal is suppressed for the rest of the frame. Responding to the absence of speech 3 5. Methods for the transfer of speech communication from the base station to the mobile unit according to Sequence in a cellular radio telephone system, which includes the steps of Transformation of a number of speech signals is numerical and divides each signal that is converted into a numerical one. Numbers are frames with a predefined length. Detecting whether each voice signal represents the sound of the active speech Encoding each signal that is numerically converted to a code associated with a moving unit, which The audio signal is spoken in order of heading. Suppression of the transmission of each frame of each encoded signal that is not related to the being spoken. The combined reception that is transmitted to the receiver. Decoding of the combined signal received, against one such communication code, at the beginning Of the frame to obtain numerical data. Considering that the numerical information corresponds to the symbol representing sound activity. Does it say or show that there is no sound? The decoding of the received signal continues if such numerical data is consistent with the expression of speech activity and the decoding of the received signal is suppressed for the rest of the frame. To show that there is no speech