H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 5/12 (2006.01) H04L 27/26 (2006.01)
Patent
CA 2412387
A scalable pattern methodology defining positions of synchronization symbols, pilot symbols and data symbols for various numbers of sub-channels in a multi-carrier communication system. A base pattern (510) is defined identifying positions of data symbols, synchronization symbols and pilot symbols for a first number of sub-channels corresponding to a first bandwidth. The base pattern is replicated or scaled to form an expanded pattern (512, 514) identifying positions of data symbols, synchronization symbols and pilot symbols for an expanded number (M) of sub-channels corresponding to a second bandwidth. The pattern methodology may be implemented by a transmitter (100) having subdivided an original information signal into M bit streams and having encoded each of the M bit streams to 16QAM symbols to form M symbol streams, by inserting synchronization and pilot symbols into each of the M symbol streams at positions determined by the expanded pattern. The pattern methodology allows a receiver (600) to perform pilot interpolation in the M symbol streams with the same set of pilot interpolation filters that would be required to perform pilot interpolation in the symbol streams of the base pattern.
Cette invention concerne un procédé à grille évolutive permettant de définir les positions de symboles de synchronisation, de symboles pilotes et de symboles de données pour un des nombres divers de sous-canaux dans un système de communication à ondes porteuses multiples. On définit une grille de base (510) permettant d'identifier les positions de symboles de données, de symboles de synchronisation et de symboles pilotes pour une première quantité de sous-canaux correspondant à une première largeur de bande. Cette grille de base est reproduite ou reportée à l'échelle de manière à formé un motif élargi (512, 514) qui identifie les positions de symboles de données, de symboles de synchronisation et de symboles pilotes pour un nombre accru (M) de sous-canaux correspondant à une deuxième largeur de bande.
Doberstein Kevin G.
Hiben Bradley M.
Gowling Lafleur Henderson Llp
Motorola Inc.
Motorola Solutions Inc.
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