发明名称 |
Turbo decoder using binary LogMAP algorithm and method of implementing the same |
摘要 |
Disclosed are a turbo decoder, which applies a base-2 binary LogMAP algorithm in implementing a turbo decoder to thereby reduce the hardware requirement and implement a high-speed turbo decoder, which comprising a split for splitting the sum of two input state metrics into an integral and a decimal part; a comparator for comparing the integral parts of the two state metrics to extract a maximum and a minimum integer; a subtractor for obtaining a difference between the original integral part and the maximum or minimum integer value; a lookup table for calculating the sum of exponential terms of base-2 function in the decimal parts; a shifter for shifting only a decimal part with a smaller integral part by the difference; an adder for adding the decimal part and a decimal part with a larger integral part; a log pre-processing block for applying a base-2 logarithm on the decimal part to thereby obtain a final value for the decimal part; and an adder for adding the maximum integral value and the final value for the decimal part to thereby obtain a final value of the base-2 function.
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申请公布号 |
US2002116680(A1) |
申请公布日期 |
2002.08.22 |
申请号 |
US20010966201 |
申请日期 |
2001.09.26 |
申请人 |
KIM HYUK;JEON IN-SAN;YANG WOO-SEOK;KIM KYUNG-SOO;CHO HAN-JIN |
发明人 |
KIM HYUK;JEON IN-SAN;YANG WOO-SEOK;KIM KYUNG-SOO;CHO HAN-JIN |
分类号 |
H03M13/37;H03M13/29;H03M13/45;(IPC1-7):H03M13/03 |
主分类号 |
H03M13/37 |
代理机构 |
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地址 |
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