Space hour coding method and corresponeded transmitting method, transmitter and communication system

A space-time coding and coding technology, which is applied in the field of transmitters and communication systems, can solve problems such as fast channel fading, and achieve the effect of improving system capacity, improving transmission rate, and reducing equipment complexity.
CN1599259AInactive Publication Date: 2005-03-23PEKING UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
PEKING UNIV
Publication Date
2005-03-23
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a new time space encoding method and its application in the condition of the space diversity and the time diversity. The encoding steps adopt the NXN dimension encoding to produce the array, and the linear transformation to every group of data. The array structure of the encoding is as follows: select a nonzero value in the first array; in the condition to guarantee the code symbols are not zero, the element of the NO. n array goes round an arbitrary angle to get the corresponding element of the NO. n+2 array. Every element in each one array is either completely same or is in quadrature to one another. When using the space diversity, set several antennas at the transmitting terminal, transmit the original data on the antennas alternatively after space time encoding and only use one antenna to receive at the transmitting terminal in order to get the effect of diversity. When using the time diversity, get the effect of STBC system of many antennas without increasing the number of the antennas and when the number is same as that of the STBC system, its performance is better than that of the STBC system.
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Description

Technical field:

[0001] The invention belongs to the technical field of mobile communication systems, and specifically relates to a space-time coding method and its corresponding transmitting method, transmitter and communication system under the conditions of space diversity and time diversity. Background technique:

[0002] The development of modern communication requires that the mobile communication system can provide higher and higher data transmission rate. However, in a wireless communication system, due to the influence of the multipath environment, the mobile channel through which the transmission signal passes from the transmitter to the receiver will experience severe fading. Space-time coding is an effective means to overcome the impact of the defect of wireless channel on the transmission signal quality: STTC (space-time trellis coding) can provide the greatest possible diversity gain and coding gain without sacrificing the transmission bandwidth efficiency, but...

Claims

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