Data loading method, transmitter, and base station

Details Data loading method, transmitter, and base station Data loading method, transmitter, and base station

2008-04-08

2008-04-08

Pham, Chi (Department: 2616)

Multiplex communications

Communication over free space

Combining or distributing information via frequency channels

C370S329000

Reexamination Certificate

active

10780911

ABSTRACT:
The invention is related to a data loading method in a communication system where sub-carriers include eigenmodes, comprising, for instance: arranging eigenmodes into a predetermined number of clusters, each cluster comprising eigenmodes of different quality levels; pre-allocating transmission power to the eigenmodes with the aid of the calculated required power for achieving the approximated signal-to-noise ratio; determining collective transmission power to be allocated to each cluster based on the pre-allocation; allocating collective transmission power to the eigenmodes.

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Sampath, H. et al., “Generalized Linear Precoder and Decoder Design for MIMO Channels Using the Weighted MMSE Criterion”.
Wong, K. et al., “Adaptive Spatial-Subcarrier Trellis Coded MQAM and Power Optimization for OFDM Transmissions”, Vehicular Technology Conference proceedings, 2000, IEEE, May 15-18, 2000, pp. 2049-2053.

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