Patent ID: 6925129
Filing Date: 2005-08-02
Classification: H04L

Abstract:
1. A circuit arrangement for data transmission using a multi-level modulation process, the multi-level modulation process using at least one orthogonal function, the circuit arrangement comprising: a data source for providing a data stream; a recoder downstream of the data source; a modulator for selecting signal points of a signal constellation according to at least one respective at least one predetermined and selected probability so as to optimize a respective at least one signal energy and a respective signal data rate, the selected signal points each having a defined respective energy, the modulator being connected to an output of the recoder; a transmission channel, an input of the transmission channel being connected to an output of the modulator; a demodulator, an input of the demodulator being connected to an output of the transmission channel; an inverse recoder for executing a first operation inverse to a second operation of the recoder, an input of the inverse recoder being connected to the demodulator; a data sink, an input of the sink being connected to an output of the inverse recoder; a temporary storage device including a control/processing unit, the temporary storage device being capable of triggering the recoder to switch between at least two recoding tables so that there is no storage overflow; a second temporary storage device including a second control/processing unit disposed between the inverse recoder and the sink; and a second data sink connected to the second temporary storage device.