Clustered OFDM communication system

Details Clustered OFDM communication system Clustered OFDM communication system

1996-10-15

1999-06-22

Nguyen, Chau

Multiplex communications

Generalized orthogonal or special mathematical techniques

Particular set of orthogonal functions

370210, 370343, 375299, 375347, H04L 2726

Patent

active

059149337

ABSTRACT:
A multicarrier communication system for wireless transmission of blocks of data having a plurality of digital data symbols in each block. The communication system includes a device for distributing the digital data symbols in each block over a plurality of clusters, each of the clusters receiving one or more digital data symbols. The digital data symbols are encoded in each of the cluster; and modulated in each cluster to produce a signal capable of being transmitted over the sub-channels associated with each cluster. A transmitter thereafter transmits the modulated signal over the sub-channels. By distributing the modulated signal over a plurality of clusters, overall peak-to-average power (PAP) ratio is reduced during transmission and transmitter diversity is improved.

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Sakakura et al., "Pre-Diversity using Coding, Multi-carriers and Multi-antennas", paper presented at 1995 Fourth IEEE International Conference on Universal Personal Communications, pp. 605-609. (Tokyo, Japan, Nov. 1995).
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