8. The method of claim 7 , wherein the secondary station uses a coding scheme during the second mode which generates a code word that is a punctured version of the code word that would be generated by the coding scheme used during the first mode.
8. The method of claim 7 , wherein the secondary station uses a coding scheme during the second mode which generates a code word that is a punctured version of the code word that would be generated by the coding scheme used during the first mode. 10. The method of claim 8 , wherein a puncturing pattern is arranged to maximize the distance between code words in a set of code words, which set is smaller than the set of code words available during the first mode.