Combined orthogonal/convolutional coding for a digital cellular CDMA system

A family of orthogonal/convolutional codes for mobile CDMA communications is discussed. Their design and implementational aspects are discussed. The R/sub 0/ parameter of this family of codes is analyzed and presented in a uniform format. It is shown that it is desirable to use a code with a higher mobile CDMA communications. Simulation results are given. In particular, the authors simulated a 2/6/64 orthogonal/convolutional code which has an advantage in E/sub b//N/sub 0/ of more than 1.2 dB over previously investigated coding schemes.<
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