Method, equipment and system for joint distribution of bits and power to subcarriers

A joint allocation and sub-carrier technology, applied in the field of communication, can solve problems such as deteriorating system performance and inability to guarantee system bit error rate
CN103220769AInactive Publication Date: 2013-07-24HUAWEI TECH CO LTD +1
5 Cites 4 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
HUAWEI TECH CO LTD
Publication Date
2013-07-24
Estimated Expiration
Not applicable Β· inactive patent

Smart Images

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

Abstract

The invention provides a method, equipment and a system for joint distribution of bits and power to subcarriers. According to hardware parameters of a non-linear power amplifier and channel noise, the relation among the ratio of signal to interference of each subcarrier, the power of the subcarriers and the total power under a non-linear distortion condition is determined, so that non-linear distortion noise generated by the non-linear power amplifier can be taken into account, and the corresponding bit and the corresponding power are jointly distributed to each subcarrier by means of a preset total power minimum iterative algorithm according to the determined relation among the ratio of signal to interference of each subcarrier, the preset input power, the total bits and the bit error rate under the non-linear distortion condition. Compared with the prior art, the method, equipment and the system for the joint distribution of the bits and the power to the subcarriers enable the non-linear distortion of the non-linear power amplifier to be taken into account, ensure the minimization of the total power, and can better meet requirements for a system bit error rate (BET) at the same time.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to communication technology, in particular to a subcarrier bit and power joint allocation method, device and system. Background technique

[0002] Orthogonal Frequency Division Multiplexing (Orthogonal Frequency Dkvkskon Multkplexkng, OFDM), as a multi-carrier modulation technology, has the advantages of high spectrum utilization and anti-multipath delay, and has become the core technology of the next generation mobile communication system. OFDM converts the high-speed data stream into serial and parallel, divides the high-speed data stream into multiple low-speed data streams, and then modulates it onto each subcarrier (QPSK or QAM). The allocation algorithm of wireless resources in the OFDM system, such as subcarrier bits and power, is the key to the use of the OFDM system. Resource allocation in OFDM system is an important means to ensure user service quality, improve system capacity and spectrum utilization. The purp...

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