An encoder incorporating a minimum number of logic circuits to convert 64 6-bit data words into 64 32-bit code words, forming a 32, 6 biorthogonal code. Each code bit, generated during a multiclock-period-code-bit- period, is logically combined, at the end of the code bit period, with a code bit of a comma free vector code to produce a code bit of a code word in a 32, 6 comma free biorthogonal code. The encoder implements an algorith in accordance to which each of the six data word bits is incorporated in a modulo-2 summation, as a function of the code-bit number and number of logic ones in the code-bit number in binary form.
A large class of multiple-error-correcting unit-distance counting codes and associated coding apparatus are presented. The class of codes includes the Gray codes, the Kautz codes, and the twisted ring counter codes as subclasses. The class of codes is of special importance because it is generated by counting circuitry which can be simply implemented. Furthermore, a subset of the codes has an easily determined conversion relationship to the ordinary binary counting codes that can be used as the basis for a simple error-detection method.
A binary encoded data transmission system wherein a binary data bit of a first value is represented by a first predetermined multi-bit binary Barker word and a binary data bit of a second value is represented by a second multi-bit binary Barker word, the bits in like positions in said first and second words having complementary binary values. A transmitter transmits preselected encoded data words in the aforementioned format and a receiver receives such words for decoding data. A selective call system is provided utilizing Barker/Barker complement encoded words as assigned addresses.
The present invention provides embodiments for producing a user equipment identification scrambling sequence (UEIDSS). The produced sequences for different user identification codes have a high separation. A base station uses the UEIDSS to scramble a high speed shared control channel (HS-SSCH) and a user equipment (UE) uses the UEIDSS to descramble the HS-SSCH. The embodiments utilize various blocks for producing the codes. These blocks include Reed-Muller encoding, concatenation, rate matching, segmentation, convolutional encoding, tail bit discarding, zero padding, repeating, CRC calculation, quadratic residue coding, parity-check bit, shortening, puncturing and BCH encoding blocks.
A user equipment is used in a code division multiple access communication system. The user equipment comprises circuitry configured to process a user equipment identification (UE ID) by 1/2 rate convolutionally encoding the UE ID to produce a code. The code is used by the user equipment for descrambling a high speed shared control channel (HS-SCCH). The user equipment comprises circuitry configured to receive payload data over a high speed physical downlink shared channel (HS-PDSCH) associated with the HS-SCCH.
