초록 ▼

The encoding/transmission of information in an OFDM system is enhanced by using complementary codes. The complementary codes, more particularly, are converted into phase vectors and the resulting phase vectors are then used to modulate respective carrier signals. The modulated result is then transmi

The encoding/transmission of information in an OFDM system is enhanced by using complementary codes. The complementary codes, more particularly, are converted into phase vectors and the resulting phase vectors are then used to modulate respective carrier signals. The modulated result is then transmitted to a receiver which decodes the received signals to recover the encoded information.

대표청구항 ▼

[ We claim:] [13.] A receiver for receiving encoded data from a transmitter, said receiver comprisingapparatus that receives a composite signal of a plurality of signals transmitted by said transmitter and regenerating individual signal vectors as a function of the received composite signal,apparatu

[ We claim:] [13.] A receiver for receiving encoded data from a transmitter, said receiver comprisingapparatus that receives a composite signal of a plurality of signals transmitted by said transmitter and regenerating individual signal vectors as a function of the received composite signal,apparatus that applies a predetermined kernel code to said regenerated vectors to generate vector elements representing individual ones of said complementary codes,apparatus that forms, in accordance with a predetermined encoding matrix, pairs of said elements and associating individual ones of said pairs with respective ones of constellation symbols, in which one element in each of said pair is taken as a complex conjugate so that said one element may be subtracted from the other element of the respective pair of elements,apparatus that determines individual ones of said constellation symbols as a function of the subtracted result obtained from the associated ones of said pairs of elements, andapparatus that determines each constellation symbol, .phi..sub.n, not associated with any one of said pairs as a function of the derived constellation symbols and a complementary code, .theta..sub.k, formed in part by that constellation symbol, .phi..sub.n.