Calculation of shell frequency distributions obtained with shell-mapping schemes
نویسنده
چکیده
| In order to calculate the transmit power in shell{mapping{based transmission schemes, the frequencies of the shells are required. In this paper, a simple but general method for the calculation of these frequencies is derived. The method has approximately the same complexity as the shell{mapping encoder. As an example, the method is shown in detail for the shell{mapping scheme speci ed for the international telephone{line V.34 modem standard. Moreover, a very simple approximation is given which is tight for large constellations. Keywords|Shell mapping, probabilities of signal points
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عنوان ژورنال:
- IEEE Trans. Information Theory
دوره 45 شماره
صفحات -
تاریخ انتشار 1999