| 摘要 |
Symbols are encoded in a transmitter of a wireless network that uses multiple-input and multiple-output (MIMO) orthogonal frequency division multiplexing (MIMO-OFDM) by partitioning the sub-carriers to be used for transmitting the symbol into a set of K groups of contiguous sub-carriers. For each group k of NK-1 modulation symbols Dk(1), Dk(2), . . . , Dk(NK-1), the modulation symbol Dk(n), for group k, is mapped to a corresponding mapped modulation symbols Xk(n) according to m ( k ) = 1 N K - 1 ∑n = 1 N K - 1 D k ( n ) , Xk(n)=alpha1(k)(Dk(n)-m(k))+beta(k) n=1, . . . , NK-1, Xk(NK)=alpha2(k)m(k), where m(k) is a sample-mean of the set of modulation symbols corresponding to the kth group, alpha1 (k), alpha2 (k) and beta(k), for k=1, . . . , K, are constants, wherein the constants are predetermined and positive. |
