Wireless network with enhanced data rate

Details Wireless network with enhanced data rate Wireless network with enhanced data rate

2005-08-09

2005-08-09

Tse, Young T. (Department: 2637)

Pulse or digital communications

Transmitters

Quadrature amplitude modulation

C375S308000, C332S104000, C341S061000

Reexamination Certificate

active

06928123

ABSTRACT:
A high-speed transmitter for digital data having a variable data rare, the transmitter comprising a convolutional encoder, adapted to generate, for each group of k input bits in a bitstream, n coded output bits, such that k and n are integers, n equal to or greater than k, and at least one of k and n is variable responsive to the variable data rate of the transmitter; and a modulator, coupled to map the output bits generated by the encoder to a constellation of M symbols for transmission by the transmitter, M an integer, which is variable responsive to the variable data rate of the transmitter; and wherein for a given rate Rs of transmission of the symbols by the transmitter, the variable data rate Rb is given by Rb=Rs*log2(M)*Rc, wherein Rc is a code rate equal to k
.

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