VARIABLE-SPEED SERIAL DECODER FOR CODE-DIVISION MULTIPLE ACCESS COMMUNICATION SYSTEM Russian patent published in 2004 - IPC

FIELD: mobile code-division multiple access communication systems. SUBSTANCE: proposed decoder is designed for recovering source data bit streams that were encoded with superhigh degree of precision as stream of coded characters and functions to decode these streams at different data transmission speeds at a time, as well as to decode them at unknown data transmission speed either in continuous mode or in synchronized burst mode. In the process decoder operates at many speeds simultaneously to produce one or more data quality metrics for each burst of decoded data. Input buffer has choice and accumulation logic for organizing information codes into bursts to afford repetition mode or random burst mode at lower data cycle transmission speeds. Decoded data bursts for each or several predetermined data transmission speeds are held in output buffer for approximately half-cycle of decoding thereby enabling system microprocessor to select respective decoded data burst. In addition decoder can function with one of several predetermined superhigh-precision coding algorithms. Proposed decoder made in the form of single monolithic integrated circuit can be used in one or all channels of shared communication system. EFFECT: provision for real-time decoding to transfer sequence of cycles at predetermined cycle-to-cycle varying speeds without transmitting data on speed. 20 cl, 13 dwg, 2 tbl