In this paper, we introduce the principle of convolutional code. Then we discuss the design method of ( 2,1, N) convolutional coder by using VHDL. 通过介绍卷积码的基本原理,探讨了利用VHDL硬件描述语言实现(2,1,N)卷积编码器的方法。
Woven convolutional codes adopt the "Woven" scheme to disperse the errors of inner coder in some special manner. This structure makes Woven convolutional codes perform better. Woven卷积码采用特殊的编织方式,将内码解码器的错误以某种形式分散开来,这种结构使其获得良好的纠错性能。
It considers switching among three transmission modes with bit-interleaved convolutional coder: space multiplexing, space diversity and the combination mode of multiplexing and diversity. 该方案在以下三种发射模式间进行选择:空间复用、空间分集和复用/分集的混合模式。