摘要:
A kind of folding systolic array architecture for a CFRS decoding circuit that applies to a cell search in a wideband code division multiple access system. The invention involves using a systolic array for its decoding circuit and using a kind of folding technology to reduce the area of the systolic array. The systolic array for the decoding circuit comprises an input pattern generator, a processing element array designed in the form of a systolic array and a boundary processing element array. Given the skewed-form output results required by the systolic array and generated by the input pattern generator, the processing element array makes a set of correlating comparisons, and outputs the results of the correlating comparisons to the boundary processing elements, so as to acquire the decoding results required by the CFRS decoding. The results indicate the frame boundary and scrambling code groups of the cell search in a wideband code division multiple access system.
摘要:
The present invention discloses a multifunctional video encoding circuit system capable of performing six types of operations: addition, subtraction, multiplication, multiply-accumulation, interpolation, and absolute difference summation. A partial product generation part, a partial product reduction part and an accumulation part of the circuit system are equipped with a virtual power suppression unit each for reducing the power consumption of the partial product generation part, the partial product reduction part and the accumulation part, so as to reduce the power consumption of the multifunctional video encoding circuit system.
摘要:
The present invention discloses a configurable hierarchical comma-free Reed-Solomon decoding circuit and a method thereof. The design is based on an original hierarchical parallel architecture which not only completes a decoding process faster than conventional decoder, but also utilizes less hardware to perform various algorithms with less power consumed. The architecture of the present invention has higher decoding rate than the conventional systolic architecture by a cycle ratio of 22 to 94. Further, the present invention does not require the use of ROM to store 64 sets of codewords and uses logic gates less than one fourth of the logic gates than conventional systolic architecture. As a result, the circuit of the present invention occupies less area than the conventional architecture. The circuit of the present invention is also configurable for different applications, so it can always find an optimal compromise between speed and power consumption for various decoding requirements.
摘要:
A synchronizer for a communication device and an access point, which is installed inside the communication device and comprises a coefficient generator generating a set of coefficient code. A parallel-to-serial converter receives a set of input code from an access point, performs a parallel-to-serial conversion on the set of input code and outputs a result. A coefficient element array includes a plurality of coefficient elements interconnecting with each other. Each of the coefficient elements receives the set of input code from the parallel-to-serial converter and receives the set of coefficient code, and then performs a passive or active correlation operation on the set of input code and the set of coefficient code to output a correlation value to the access point for synchronizing signals of the communication device and the access point.
摘要:
The present invention discloses a synchronizer for a communication device and an access point, which is installed inside the communication device and comprises a coefficient generator generating a set of coefficient code; a parallel-to-serial converter receiving a set of input code from an access point, performing a parallel-to-serial conversion on the set of input code and outputting a result; and a coefficient element array including a plurality of coefficient elements interconnecting with each other, wherein each of the coefficient elements receives the set of input code from the parallel-to-serial converter and receives the set of coefficient code, and then performs a passive or active correlation operation on the set of input code and the set of coefficient code to output a correlation value to the access point for synchronizing signals of the communication device and the access point. The present invention has the synchronization functions of two communication systems—WCDMA and CDMA 2000, and thus can reduce the fabrication cost and increase convenience of communication.
摘要:
A Comma-Free Reed-Solomon decoding circuit based on systolic array architecture that applies to a cell search in a wideband code division multiple access system, and more particularly a decoding circuit that employs a systolic array in its circuit structure. The systolic array for the decoding circuit comprises an input pattern generator, a processing element array designed in the form of a systolic array and a boundary processing element array. Given the skewed-form output results required by the systolic array and generated by the input pattern generator, the processing element array makes a correlating comparison, and outputs the results of the correlating comparison to the boundary processing element, so as to acquire the decoding results required by the Comma-Free Reed-Solomon code. The results indicate the frame boundary and scrambling code groups of the cell search in a wideband code division multiple access system.
摘要:
The present invention discloses a configurable hierarchical comma-free Reed-Solomon decoding circuit and a method thereof. The design is based on an original hierarchical parallel architecture which not only completes a decoding process faster than conventional decoder, but also utilizes less hardware to perform various algorithms with less power consumed. The architecture of the present invention has higher decoding rate than the conventional systolic architecture by a cycle ratio of 22 to 94. Further, the present invention does not require the use of ROM to store 64 sets of codewords and uses logic gates less than one fourth of the logic gates than conventional systolic architecture. As a result, the circuit of the present invention occupies less area than the conventional architecture. The circuit of the present invention is also configurable for different applications, so it can always find an optimal compromise between speed and power consumption for various decoding requirements.
摘要:
An apparatus for handling hash collision of hash searching includes a hash table unit, a content addressable memory (CAM) and a multiplexer encoder. When the data are hashed to produce a hash index, and hash collision occurs, the data are stored into the CAM. When performing a hash search, the hash table unit and the CAM will be simultaneously looked up and the result will be found in only one period of time.
摘要:
A weighted decoding method and circuits for Comma-Free Reed-Solomon codes that apply to a cell search in a wideband code division multiple access system. The invention also provides a weighted decoding method wherein the decoding result of the secondary synchronization code is used as a weight for received Comma-Free Reed-Solomon symbol data, and the weighted symbol data is input to the processing element array of the decoding circuit, so as to perform a weighted correlating comparison and thus enhance the accuracy of the decoding result. The weighted decoding method put forward by the invention may apply to a decoding architecture that is based on a systolic array and the decoding architecture that is based on a folding systolic array.