Patent ID: 8451943
Filing Date: 2013-05-28
Classification: H04L

Abstract:
1. A method for transmitting a signal, comprising: determining a peak clipping threshold of a signal according to f(MCS), wherein MCS represents a modulation and coding scheme (MCS) of the signal, and the f(MCS) is a corresponding relationship between the MCS and noise at a receiving end; performing peak clipping on the signal by using the peak clipping threshold to obtain peak-clipped signal; and transmitting the peak-clipped signal wherein the determining the peak clipping threshold of the signal according to f(MCS) comprises at least one of the group consisting of: (a) determining the peak clipping threshold according to f(MCS) and relative noise at the receiving end; and (b) determining the peak clipping threshold according to f(MCS) and a parameter k, wherein the parameter k is any value smaller than 1 and greater than 0, wherein the determining the peak clipping threshold according to f(MCS) and the relative noise at the receiving end comprises: obtaining the peak clipping threshold through table lookup or calculation according to a formula wherein is the relative noise at the receiving end, h is a wireless path loss intensity, n 1 is noise introduced by a signal at the receiving end, n r is power of noise introduced after peak clipping and G is the peak clipping threshold, and r b is a peak clipping point.