E-HICH (enhanced hybrid automatic repeat request indicator channel) downlink power control method
A technology of power control and transmission power, applied in the field of downlink power control of E-HICH
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[0027] In order to make the purpose, technical means and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0028] E-HICH is a special downlink channel, and the transmission power of the MIDAMBLE domain of this channel is equal to the sum of the transmission powers of all UE signals carried on the E-HICH. Because the power of the MIDAMBLE domain directly determines the performance of channel estimation, the increase or decrease of the MIDAMBLE power will affect the demodulation performance of all UEs on the E-HICH. Usually, the channel estimation performance is allowed to vary within a certain range, and the demodulation performance of the UE can be guaranteed through a reasonable demodulation algorithm. However, when the channel estimation performance deteriorates to a certain extent, the demodulation performance of the UE will be severely degraded, so that the expected ...
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