Method for realizing controlling FDD-long term evolution (LTE) physical downlink shared channel (PDSCH) power in DSP
A technology for power control and mobile communication system, which is applied in the field of downlink PDSCH power control, and achieves the effects of small calculation amount, simple power control method, and shortened implementation time.
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[0024] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0025] figure 2 It is the method of implementing FDD-LTE downlink PDSCH power control in DSP in the present invention. The basis of this embodiment is: 20M bandwidth, two antennas, one UE occupies 12 RBs, mapped to 1440 REs, QPSK modulation, PA and PB The parameters of are given by the upper layer.
[0026] According to step 1, two modulation tables are generated for PA and PB. The size of each table is 16*4=64 values, 2880 bits are QPSK look-up table modulation every 4 bits, and 1440 modulations are obtained corresponding to PA and PB respectively. The sign, the imaginary part and the real part are represented separately, that is, the modulated data corresponding to PA and PB are each 2880 values.
[0027] According to step 2, a precoding operation is performed, wherein the modulated original data is transmitted on the first antenna port, and the complex conjugat...
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