Power allocation method for modulation constrained system

A technology of modulation and coding mode and power, which is applied in the power distribution field of MIMO-OFDM system, can solve problems such as power loss, and achieve the effect of ensuring system capacity and saving system power
CN101488934AActive Publication Date: 2009-07-22DATANG MOBILE COMM EQUIP CO LTD
0 Cites 4 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
DATANG MOBILE COMM EQUIP CO LTD
Publication Date
2009-07-22

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a power splitting method for modulating a limited system, including the following steps: a. the maximum transmission speed of each sub-channel is determined according to the maximum modulation coding manner; b. a sending terminal arranges each sub-channel according to down channel eigenvalue matrix so that the strongest sub-channel is used as the current sub-channel and the system gross power is used as the current splitting power; c. the sending terminal counts the original power of the current sub-channel and the saturation power of the current sub-channel so that the actual transmission power of the sub-channel is determined according to the minimum value of original power and saturation power; d. the sending terminal uses the difference of the current splitting power and the actual transmission power of the current sub-channel as new current splitting power, and whether the current sub-channel is a subweak sub-channel is judged; if so, the current splitting power is distributed to the weakest sub-channel and the process is finished; or, the next sub-channel is used as the current sub-channel and the step c is returned back. The application of the method in the invention can guarantee system volume and meanwhile save system power.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to multiple-input multiple-output (MIMO)-orthogonal frequency division multiplexing (OFDM) system technology, in particular to a modulation-limited MIMO-OFDM system power allocation method. Background technique

[0002] A multiple-input multiple-output (MIMO) system is a communication system that uses multiple antennas at the sending and receiving ends. The spatial multiplexing technology of the MIMO system is to transmit different data streams on different antennas. The spatial multiplexing technology can be used without increasing the bandwidth. The capacity and spectrum efficiency of the communication system are doubled in the case of the MIMO system, which truly reflects the essence of the capacity improvement of the MIMO system.

[0003] By decomposing the channel, we can equivalent the channel into several independent parallel sub-channels, and transmit information independently through these parallel spatial sub-cha...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More