Device for realizing 802.11nMIMO technology in cable network
A wired network technology technology, applied in the wired network field, can solve the problems that multiple independent channels cannot be formed, MIMO technology cannot be used directly, etc.
Inactive Publication Date: 2009-09-30
CHONGQING SICMICRO ELECTRONICS
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Problems solved by technology
However, when 802.11n, the next-generation technology of the 802.11 series, is used for broadband access to wired networks, it encounters an insurmountable technical obstacle: MIMO technology cannot be directly used for information transmission using metal wires as the medium, because electromagnetic waves are transmitted through metal wires. There is no refraction and scattering in the line, and multiple independent channels at the same operating frequency cannot be formed
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[0012] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, below in conjunction with a preferred embodiment of the present invention, describe in detail as follows:
[0013] Such as figure 1 As shown, a preferred embodiment of the present invention is realized by multiple frequency converters and user equipment with 802.11n radio frequency / baseband chips. This device includes: a pair or more than one pair of frequency converters connected through a wired network, each frequency conversion Each device has a higher frequency radio frequency port to connect to a radio frequency port of the 802.11n radio frequency / baseband chip, and has a lower frequency radio frequency port to connect to the wired network.
[0014] The above-mentioned 802.11n RF / baseband chip constitutes a communication channel with 1 RF port of another 802.11n RF / baseband chip through 1 RF port of the chip, 1 frequency converter, wi...
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The invention relates to a device for realizing 802.11n MIMO technology in a cable network. The device comprises a pair of or more frequency converters connected through a cable network, wherein each frequency converter is provided with a first radio frequency (RF) port and a second RF port; the first RF port is connected with the first RF port of another frequency converter through the cable network; the second RF ports are respectively connected with 802.11n RF / baseband chips; the working frequency of the first RF ports of each pair of the frequency converters is identical and is different from that of the first RF ports of other pairs of the frequency converters; and the working frequency of the second RF ports of all frequency converters is identical. The device makes use of a pair of 802.11n baseband chips and a plurality of pairs of 802.11n RF chips and the frequency converters to form a plurality of communication channels in a plurality of frequency bands of the cable network, thereby realizing the 802.11n MIMO technology in the cable network.
Description
technical field [0001] The invention relates to the field of wired networks, in particular to a multi-band device for realizing 802.11n MIMO technology in the wired network. Background technique [0002] MIMO (Multi-Input, Multi-Output), which means Multiple Input Multiple Output, is used in many fields of communication technology and computing technology. MIMO in IEEE 802.11n technology refers to the use of refraction and scattering of electromagnetic waves at the same operating frequency point in the air to form multiple information channels to transmit and receive digital information. Access point (AP, Access Point) devices and station (Station) devices based on 802.11n technology can be installed with 2 or more antennas. Each pair of antennas provides a channel. That is, using the MIMO technology, without increasing the bandwidth and antenna transmission power, the digital bandwidth of wireless communication can be doubled, and the spectrum utilization rate can be doub...
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IPC IPC(8): H04L27/10H04L29/06
Inventor 边晓春钟洋贾治安康惠丽
Owner CHONGQING SICMICRO ELECTRONICS