Patent ID: 9094266
Filing Date: 2015-07-28
Classification: H04L

Abstract:
1. A method, comprising: receiving a stream of symbols, the stream of symbols comprising M block repetitions, each block repetition of the M block repetitions comprising L symbols, wherein M≧2 and L>0; constructing K symbol replica vectors, wherein K≦L and each symbol replica vector of the K symbol replica vectors comprises M received symbols from the stream of symbols, and wherein successive symbols in a symbol replica vector of the K symbol replica vectors are located within said stream of symbols at an interval of L symbols; determining N phase-offset hypotheses, wherein N>0; calculating K combined symbol vectors of length N, wherein each element in each combined symbol vector of the K combined symbol vectors is calculated by combining, in accordance with a corresponding phase-offset hypothesis of the N phase-offset hypotheses, one or more symbols included in a corresponding symbol replica vector of the K symbol replica vectors; calculating K metric vectors of length N corresponding to the K combined symbol vectors; calculating an average metric vector of length N, wherein each element in the average metric vector is calculated by at least one of averaging or summing K corresponding elements from the K metric vectors; identifying, from amongst a plurality of elements in the average metric vector, an element having a maximum value; and determining, in accordance with a phase-offset hypothesis that corresponds to the element having the maximum value, an estimated phase offset.