Transmitting system and receiving system for multi-carrier broadband simultaneous information and energy transfer

• US 9,641,225 B2
• Filed: 05/31/2016
• Issued: 05/02/2017
• Est. Priority Date: 03/25/2015
• Status: Active Grant

• Current Assignee: South University Of Science And Technology Of China
• Original Assignee: South University Of Science And Technology Of China
• Inventors: Gong, Yi, Han, Zidong
• Primary Examiner(s): HSIEH, PING Y
• Application Number:
  US15/169,314
• Publication Number:
  US 20160285519A1
• Time in Patent Office: 336 Days
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 7/0013 acting upon several batteries simultaneously or sequentially H02J7/1423 takes precedence
• CPC Class Codes: H03M 9/00 Parallel/series conversion or vice versa digital stores in which the information is moved stepwise per se G11C19/00
• CPC Class Codes: H04B 5/72 for local intradevice communication
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: H04L 25/00 Baseband systems
• CPC Class Codes: H04L 27/2042 with more than two phase states
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/006 Quality of the received signal, e.g. BER, SNR, water filling
• CPC Class Codes: H04L 5/0085 when channel conditions change

Abstract

A transmitting system and a receiving system for multi-carrier broadband simultaneous information and energy transfer are provided, the transmitting system comprising: a signal management control system, a baseband signal generating unit, an encoding unit, a serial-parallel conversion unit, a mapping unit, a modulation unit and a parallel-serial conversion unit. By adopting the transmitting system for simultaneous information and energy transfer, separate energy signals are transmitted simultaneously while the information signals are transmitted to the receiving end, and sufficient energy can be provided for the receiver. Besides, by optimizing information signal and energy signal through the optimization algorithm, not only the energy transfer efficiency but also the information transfer rate can be improved.

Claims

1. A transmitting system for multi-carrier broadband simultaneous information and energy transfer, comprising:

a signal management control system, configured to match with an optimization algorithm, perform pre-allocation of carrier, power and frequency spectrum on information signal data stream and energy signal data stream in a baseband signal dynamically based on channel quality parameters, so as to generate a pre-allocation parameter set;

a baseband signal generating unit, configured to generate information baseband signal and energy baseband signal corresponding to the pre-allocation parameter set;

an encoding unit, configured to encode the information baseband signal and the energy baseband signal respectively so as to generate corresponding encoded information baseband signal and encoded energy baseband signal;

a serial-parallel conversion unit, configured to perform serial-parallel conversion on the encoded information baseband signal and the encoded energy baseband signal to generate parallel data streams;

a mapping unit, configured to classify the parallel data streams and perform corresponding modulation and pre-allocation on the information baseband signal and energy baseband signal in the parallel data streams according to the pre-allocation parameter set;

a modulation unit, configured to modulate the information baseband signal and energy baseband signal in the parallel data streams onto pre-allocated subcarriers according to the result of the modulation and pre-allocation;

a parallel-serial conversion unit, configured to convert the parallel data streams into a serial data stream and transmit it to an antenna unit; and

an antenna unit, configured to transmit the serial data stream output from the parallel-serial conversion unit.

2. The transmitting system for multi-carrier broadband simultaneous information and energy transfer of claim 1, wherein the signal management control system comprises:

a channel parameter acquiring unit, configured to acquire channel quality parameters;

an optimization algorithm processing unit, configured to optimize energy signal and information signal based on preset optimization objectives and constraints;

wherein the preset optimization objectives involve number of energy baseband signal carriers, power, and information transfer rate of information baseband signal; and

the constraints involve;

the power acquired by the receiver being greater than or equal to a minimum power required by the operation of the receiver per unit time;

the sum of powers of energy signals on the subcarriers being less than or equal to a total power of the energy signals;

an average power spectral density on each of subcarrier bands being less than or equal to a given parameter value; and

a sum of powers of information signals on the subcarriers being less than or equal to a total power of the information signals; and

a pre-allocation parameter unit, configured to generate a pre-allocation parameter set according to an optimization result of the optimization algorithm processing unit.

3. The transmitting system for multi-carrier broadband simultaneous information and energy transfer of claim 2, wherein the pre-allocation parameter set comprises an information baseband signal pre-allocation parameter set and an energy baseband signal pre-allocation parameter set;

wherein the information baseband signal pre-allocation parameter set comprises;

an information signal power allocation set; and

an information signal subcarrier allocation set; and

wherein the energy baseband signal pre-allocation parameter set comprises;

an energy signal subcarrier allocation set;

an energy signal power allocation set; and

the total power of energy signals.

4. The transmitting system for multi-carrier broadband simultaneous information and energy transfer of claim 3, wherein the baseband signal generating unit comprises an information baseband signal generating unit and an energy baseband signal generating unit;

and

the energy baseband signal generating unit performs power allocation on energy baseband signal data streams according to the energy signal power allocation set and the total power of the energy signals in the energy baseband signal pre-allocation parameter set, and adds subcarrier allocation information into frame headers of corresponding energy baseband signal data streams according to the energy signal subcarrier allocation set.

5. The transmitting system for multi-carrier broadband simultaneous information and energy transfer of claim 2, wherein the encoding unit comprises an information baseband signal encoding unit and an energy baseband signal encoding unit;

wherein the information baseband signal encoding unit performs convolutional encoding on the information baseband signal; and

the energy baseband signal encoding unit performs quadrature encoding on the energy baseband signal.

6. The transmitting system for multi-carrier broadband simultaneous information and energy transfer of claim 2, wherein the modulation unit comprises an information baseband signal modulation unit and an energy baseband signal modulation unit;

wherein the energy baseband signal modulation unit performs spectrum spreading modulation on the energy baseband signal.

7. The transmitting system for multi-carrier broadband simultaneous information and energy transfer of claim 6, wherein the energy baseband signal modulation unit comprises an impulse forming filtering module, a spreading module and a mixing module three of which are connected sequentially.

8. The transmitting system for multi-carrier broadband simultaneous information and energy transfer of claim 2, wherein a guard interval inserting unit is arranged between the modulation unit and the parallel-serial conversion unit.