Abstract: The present invention provides a method for enhancing reliability of information transmission by (a) establishing a matrix based on the length of bits of valid information in frame time slots; and creating a new matrix by presetting Error Correction Coding (ECC) for rows and columns of said matrix; (b) adopting the 1st Interleaving method to re-allocate bits which have been processed twice by using said ECC in said new matrix, to both ends of said frame time slots; and (c) adopting the 2nd Interleaving method to re-allocate the remaining bits in said new matrix to the middle of said frame time slots. After processed like this, the anti-interfering ability of the bits at both ends of TDMA frame time slot can be significantly enhanced, and the bit-error rate is decreased most, and all redundancy bits of Hamming codes can be arrayed at both ends of TDMA frame time slot.

Abstract: This invention relates to a method and system for digitizing bit synchronization in wireless communication. The method comprises delaying at intervals an input signal sequence, which contains at least one path of input signals; multiplying each path of input signals respectively by input signals in at least one local channel within one symbol period, the results are accumulated and then averaged within the symbol period; comparing absolute values of the averaged values of each channel of each path of input signals, and choosing a maximum absolute value to output as a bit synchronization extremum of the path; comparing the bit synchronization extremums of each path of input signals, and choosing a path of input signals having a maximum extremum as a decoded data output. This invention utilizes DMR bit synchronization technology that facilitates digitalization and reduces calculation, thereby greatly increase data rate, save resources and reduce costs.

Abstract: The present invention relates to private network communication techniques, and provides a DMR private network communication terminal, communication system, and an implementation method thereof with respect to the drawback existing in the prior art that the idle time slot can not be determined in advance, and therefore the idle time slot can not be utilized to initiate new private network communication. The DMR private network communication terminal includes: a communication module, adapted to receive/transmit DMR private network communication; a synchronization module, adapted to listen to a DMR synchronization pattern and establish synchronization with the DMR synchronization pattern, determine the time slot occupied by the DMR synchronization pattern, and thereby lock the pre-assigned communication time slot, and controls the communication module to receive/transmit DMR private network communication in the pre-assigned time slot.

Abstract: The present invention provides a method for enhancing reliability of information transmission, comprising the steps of: (a) establishing a matrix based on the length of bits of valid information in frame time slots; and creating a new matrix by presetting Error Correction Coding (ECC) for rows and columns of said matrix; (b) adopting the 1st Interleaving method to re-allocate bits which have been processed twice by using said ECC in said new matrix, to both ends of said frame time slots; and (c) adopting the 2nd Interleaving method to re-allocate the remaining bits in said new matrix to the middle of said frame time slots. After processed like this, the anti-interfering ability of the bits at both ends of TDMA frame time slot can be significantly enhanced, and the bit-error rate is decreased most, and all redundancy bits of Hamming codes can be arrayed at both ends of TDMA frame time slot.

Abstract: The present invention relates to a radio with a key and knob combination. To solve problems such as inconvenience caused by the independent PTT key and volume control knob on the traditional radios, the present invention provides a radio with a key and knob combination, comprising a PPT key unit and a volume control unit, wherein the key is installed inside a central cavity of the knob, which is a hollow knob, to form the key and knob combination. Rotation of the knob (106) may drive the shaft (102) and the toggle piece (111) to rotate synchronously, and then toggle the volume switch (112), while the pressed key (101) may cause the shaft (102) moving axially to toggle the PTT switch (103). When operating the radio with a single hand, users can both press the PTT key to initiate a call and rotate the knob to adjust the volume level by a thumb or a forefinger, and the operation is very convenient.

Abstract: The present invention discloses a battery latch structure, wherein a battery slot for receiving a battery is located on the main body, a first end of said battery is latched to a first end of said slot through a first clamp structure, and a second end of said battery is latched to a second end of said slot through a second clamp structure. The second clamp structure includes a second fixed clamp located on the left and right sides of the second end of said slot, and a battery latch, a spring and two battery lock members located at the second end of said battery. The battery latch is located at the second end of the battery and may be slid upwards and downwards to be moveably connected with the two battery lock members. The spring is located between the two battery lock members. The said spring can push the two battery lock members protruding leftwards and rightwards respectively to insert into the second clamp.

Abstract: This invention relates to a method and system for digitizing bit synchronization in wireless communication. The method comprises delaying at intervals an input signal sequence, which contains at least one path of input signals; multiplying each path of input signals respectively by input signals in at least one local channel within one symbol period, the results are accumulated and then averaged within the symbol period; comparing absolute values of the averaged values of each channel of each path of input signals, and choosing a maximum absolute value to output as a bit synchronization extremum of the path; comparing the bit synchronization extremums of each path of input signals, and choosing a path of input signals having a maximum extremum as a decoded data output. This invention utilizes DMR bit synchronization technology that facilitates digitalization and reduces calculation, thereby greatly increase data rate, save resources and reduce costs.