107 results about "Long code" patented technology

A reception step receives a multicarrier signal containing subcarriers, at least one of which a synchronization signal is transmitted therein, multiplied only by a synchronization signal spreading code, a correlation detection step detects correlation values between the received multicarrier signal and replicas of the synchronization signal, and a timing detection step detects a FFT timing and a long code received timing according to the correlation values.

System and method for decoding variable-length codes. A variable-length decoder includes an address generator and a local memory unit. The local memory stores a variable-length code look-up table. The local memory can be programmed to include a look-up table supporting substantially any decoding algorithm. In one embodiment, a decoder memory unit and a system memory unit are employed together with the local memory to store a codeword look-up table. The shortest codes are stored in local memory, the next shortest in decoder memory, and the longest codes are stored in system memory. A multistage search algorithm is employed to search for the longest codes. The address generator generates the address of the code table to be searched by adding the value of the bits to be searched to a base address.

The invention relates to encoding and decoding methods for shortening a Turbo product code. The encoding method comprises the following steps of: performing row or column encoding on an information sequence to be encoded; performing parallel encoding on code words of row or column component codes generated by the row or column encoding; and judging whether the encoding is finished. The decoding method comprises the following steps of: generating a hard decision sequence of a soft-input information sequence; selecting the least reliable bits in the soft-input information sequence; generating a test sequence according to the hard decision sequence and the least reliable bits; decoding the test sequence to generate candidate code words; calculating the measurement of the candidate code words and the soft-input information sequence; reducing the number of the candidate code words; determining decision code words according to the measurement of the candidate code words; and calculating external information of each code element in the decision code words. The encoding method has the advantages of improving data throughput and reducing encoding delay; and the decoding method has the advantages of saving a mass of logical resources and storage resources, particularly well balancing decoding complexity and data throughput under the condition of longer code length of component codes.

A mobile radio terminal UE performs starting PNG, detecting a best cell, and starting generation of Long Code and receives various types of messages from a 1xRTT CS Access on the basis of System Information supplied from an E-UTRAN.