Abstract
With the widely use of 4G network, the corresponding bandwidth processing has become a critical issue. The current recognized 4G network is LTE-A. In the baseband processing for LTE-A, the processing of its physical layer algorithm is the biggest bottleneck for current processors. The use of application specific integrated circuit (ASIC) design has become necessary. This article will introduce a communication dedicated coprocessor (TxCP), specifically for LTE-A physical layer uplink shared/control channel (PUSCH/PUCCH) algorithm for bit-level acceleration. Its internal support for PUSCH/PUCCH CRC, Turbo encoding, equation definable convolutional encoding, data channel and control channel rate matching, channel interleaving, scrambling and modulation supporting QPSK, 16QAM and 64QAM. And in order to ensure that the coprocessor has a certain degree of flexibility, its internal controller design will support a variety of modes to ensure that some of the algorithm modules can be run separately. The programming model of the processor is relatively simple, and the user does not need to go through a complicated design.
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