A construction technique for charge constrained (1, k/spl ges/4) codes

Yinyi Lin; Pi-Hai Liu

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A construction technique for charge constrained (1, k/spl ges/4) codes

机译：电荷受限（1，k / spl ges / 4）码的构造技术

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Modulation codes used in some digital recording systems must satisfy the charge constraint in addition to the (d, k) constraint. A construction technique is presented in this work for charge constrained (1, k/spl ges/4) codes. The construction technique is based on a merging bit rule and dklr-sequences with l=r=k-3. Decoding of the constructed codes is state independent, and no error propagation occurs during decoding. The generating function of dklr-sequences is derived with information regarding sequence length, charge and weight; and coding rate of charge constrained (1, k/spl ges/4) codes is tabulated. A comparison is also made of the efficiency of a (1, 5, 10) code with coding rate 8/16 constructed by this technique with that of the M/sup 2/ (1, 5, 3) code when used with error correcting codes.

机译：除（d，k）约束外，某些数字记录系统中使用的调制代码还必须满足充电约束。在这项工作中提出了一种针对电荷受限（1，k / spl ges / 4）码的构造技术。构造技术基于合并位规则和l = r = k-3的dklr序列。构造代码的解码与状态无关，并且在解码过程中不会发生错误传播。 dklr序列的产生函数是通过有关序列长度，电荷和重量的信息推导出来的。并将电荷受限的（1，k / spl ges / 4）码的编码率制成表格。当将其与纠错一起使用时，还比较了通过此技术构造的编码速率为8/16的（1、5、10）码的效率与M / sup 2 /（1、5、3）码的效率。代码。

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《IEEE Transactions on Magnetics》 |1995年第6期|P.3081-3083|共3页
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Yinyi Lin; Pi-Hai Liu;
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A construction technique for charge constrained (1, k/spl ges/4) codes

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