Patent ID: 8599948

Claim:
A mapping method, implemented by a transmitting node for use in a wireless communication system, for mapping symbols on an Orthogonal Frequency Division Multiplexing (OFDM) grid defined by at least a first dimension and a second dimension from the dimensions time, frequency and space, said method comprising: coding, by said transmitting node, an incoming symbol stream with a coding scheme to obtain an output symbol stream to be transmitted from said transmitting node to a receiving node, wherein the output symbol stream comprises a plurality of code related symbol groups, each comprising a plurality of symbols that are related through the coding scheme; mapping, by the transmitting node, symbols of the output symbol stream to the OFDM grid using an alternating mapping direction for symbol groups in one dimension, such that the mapping direction alternates from one row to the next or from one column to the next, and such that consecutive symbols of each said code related symbol group are mapped as close to each other as possible in the OFDM grid.