High transmission rate and bandwidth utilization rate of MIMO Multi-h CPM wireless communication method

A wireless communication and high-transmission technology, applied in transmission systems, radio transmission systems, diversity/multi-antenna systems, etc., can solve problems such as low real-time performance, large receiver hardware overhead, and slow demodulation speed

Inactive Publication Date: 2014-10-15
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of slow demodulation speed, low real-time performance and high hardware overhead of the receiver in the existing wireless communication method for CPM demodulation, a MIMO Multi-h CPM wireless system with high transmission rate and bandwidth utilization is proposed. communication method

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  • High transmission rate and bandwidth utilization rate of MIMO Multi-h CPM wireless communication method
  • High transmission rate and bandwidth utilization rate of MIMO Multi-h CPM wireless communication method
  • High transmission rate and bandwidth utilization rate of MIMO Multi-h CPM wireless communication method

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specific Embodiment approach 1

[0036]Specific implementation mode 1. Combination figure 1 Describe this specific embodiment, a kind of MIMO Multi-h CPM wireless communication method of high transmission rate and bandwidth utilization rate described in this specific embodiment, its signal transmission method:

[0037] Step 1, encoding the bit stream of the baseband signal to obtain an encoded signal;

[0038] Step 2: Perform serial-to-parallel conversion on the coded signal obtained in Step 1 to obtain N t road sign data stream;

[0039] Step 3: Perform Multi-h CPM modulation on each symbol data stream to obtain the N t Road M-ary modulation signal s(t; α);

[0040] Step 4, the N obtained in step 3 t The modulated signals are respectively used in N r The root transmit antenna transmits to N t ×N r fading channel;

[0041] Its signal receiving method:

[0042] Step five, use N t The root receiving antenna receives the N from step 4 t channel modulation signal;

[0043] Step six, set N t The modul...

specific Embodiment approach 2

[0073] Specific embodiment two, combine figure 2 Describe this embodiment, the difference between this embodiment and a MIMO Multi-h CPM wireless communication method with high transmission rate and bandwidth utilization described in Embodiment 1 is that the baseband signal bit data described in step 1 The stream is encoded, and the steps to obtain the encoded signal are:

[0074] Step 11, the baseband signal bit data stream is subjected to space-time trellis coding to obtain N t Road space time coded signal;

[0075] Step 12. Input each space-time encoded signal to a linear continuous phase encoder to obtain N t road vector signal;

[0076] Step 13, set N t The channel vector signal is input to the memoryless modulator and then encoded and output.

[0077]Space-time coding can be divided into three forms: Bell Layered Space-Time Architecture (BLAST), Space-Time Trellis Coding (STTC) and Orthogonal Space-Time Block Coding (OSTBC). , where the core structure of space-tim...

specific Embodiment approach 3

[0097] Embodiment 3. The difference between this embodiment and the MIMO Multi-h CPM wireless communication method with high transmission rate and bandwidth utilization described in Embodiment 1 is that in step 3, each symbol data stream is separately Multi-h CPM modulation, to get the N to be sent t The process of M-ary modulation signal s(t; α) is:

[0098] Step 31, represent the binary single exponential CPM signal with the linear superposition form of PAM decomposition, namely: Among them, T is the period of the binary symbol, Q is the base number, n is the symbol interval, and t is the time;

[0099] Step 32: Solve the coefficient of the PAM component b k , n = exp { jπ [ Σ m = - ∞ n α m ...

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Abstract

The invention provides a high transmission rate and bandwidth utilization rate of MIMO Multi-h CPM wireless communication method and relates to the wireless communication field. The problems that CPM demodulation is low in demodulation speed, low in real-time performance and high in receiver hardware cost by the existing wireless communication method are solved. The high transmission rate and bandwidth utilization rate of MIMO Multi-h CPM wireless communication method comprises coding baseband signal bit data flow to obtain coding signals; performing serial-parallel conversion on the obtained coding signals to obtain Nt routes of symbolic data flow; performing Multi-h CPM modulation on every route of symbolic data flow to obtain Nt routes of M system modulation signals s (t, alpha) to be sent; transmitting the obtained Nt routes of modulation signals to Nt*Nr fading channels through Nr transmitting antennas; receiving the Nt routes of modulation signals through Nr receiving antennas; loading thermal noise to the Nt routes of modulation signals; performing PAM (Pulse Amplitude Modulation) decomposition based optimal detection on the signals after the thermal noise loading; outputting the Nt routes of signals after the PAM decomposition based optimal detection after parallel-serial conversion. The high transmission rate and bandwidth utilization rate of MIMO Multi-h CPM wireless communication method is suitable for wireless communication.

Description

technical field [0001] The invention relates to the field of wireless communication. Background technique [0002] With the advancement of modern society's informatization process, the business requirements of large data volumes such as video and images have gradually replaced the original voice communication work, and thus the requirements for the transmission system speed are getting higher and higher. For the traditional wireless communication system, the bandwidth of the wireless spectrum occupied by a higher transmission rate is quite wide, and the development of wireless communication technology and the limited spectrum resources have produced a huge contradiction. Therefore, under the impetus of practical application requirements, the research and development of a new generation of wireless communication systems has been vigorously developed, which not only puts forward high requirements on the spectrum utilization rate of the communication system and the rate of data...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04H04B7/06H04B7/08H04B7/0413
Inventor 吴芝路杨丽任广辉江立辉何胜阳支毳鹏
Owner HARBIN INST OF TECH
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