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发表于 2007-2-10 01:31:38
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re:5G 无线数字音视频传输模块介绍：...
5G 无线数字音视频传输模块介绍：
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4 D$ I3 Q+ @: _% h* b# T1. Key Features
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1) Complete transceiver design of wireless communication at 5 GHz.
/ E9 R' E9 \& }9 Q3 `! q2) Supports 4.9 to 5.9 GHz frequency band and is controlled by software to comply with
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different country spectrum requirements.
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3) Dynamic frequency selection to resist interferences.
) J: p' E/ w5 ~- S$ [2 D( {4) Close-loop power control to minimize power consumption and be a friendly neighbor to
7 k0 n8 M- h2 {. Sother WLAN networks at 5 GHz.
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5) Secure networking to assure privacy and content rights protection.
0 x1 E/ U( u c- c6) Supports most of the digital video formats at TS layer including MPEG-2, MPEG-4,
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H.264 and VC-1 (WM-9).
( }. h, d( b0 n9 \+ j7) Supports point-to-point video connection with full QoS and point-to-multipoint video
0 G$ g y" v* Z, O: d+ Zbroadcasting.
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8) Configurable expansion I/O connector enabling easy integration with existing host
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6 B5 V) Q/ X5 L9) HCI interface to the host CPU to enable flexible application development at the host level.
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10) Transmission of IR control signals to the video source devices from the TV location.
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2. System Diagram
' ~1 c" |+ |9 bWAV3000 wireless module creates a proprietary 5 GHz wireless network for MPEG
; u Q2 s! N atransport stream (TS) communication. The WAV3000 is a complete wireless transceiver module
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that can be integrated as video sender and video receiver according to the host platform. When
) f/ Q( }# I3 @0 wused as video sender, WAV3000 can be embedded in a video source device (DVD, VCR, PVR,
8 g: y+ s2 S1 f2 @) }) [STB, or PC); and when used as video receiver, WAV3000 can be embedded in a video display
% l k$ r( C- bdevice (TV, flat panel or video monitors). So a pair of the WAV3000 provides a complete,
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glueless wireless connection from TS (of video source) to TS (of video display) with guaranteed
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The WAV3000 includes a configurable expansion connector (CEC). All I/O signals can be
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routed and configured through the CEC enabling easy integration with existing host systems.
% o* R. _# C" L. VFigure 1 gives a functional block diagram of the WAV3000 and associated personality
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module (PM). The personality module intends to simulate the host product platform in which the
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WAV3000 will be integrated. The PM supports demo and evaluation of the WAV3000 with a
2 C- L4 D X; Q: Ovariety of video sources (analog and digital) for different applications. It also provides
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capabilities for test and debugging of the core module.
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3 Functional Specifications
The WAV3000 supports standard MPEG Transport Stream input and output in either
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Parallel or Serial mode.
The Tx unit transmits the compressed MPEG TS signal to the Rx unit over the air, using the
, \" f) Q8 ^6 d1 h& b9 Y5 wWiViTM wireless networking technology at 5 GHz.
Supports 4.9 to 5.9 GHz frequency band and is controlled by software to comply with
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different country spectrum requirements.
The system support data rates from 6 Mbps to 60 Mbps.
The system supports video bit rates from 3 Mbps to 45 Mbps.
Proprietary radio resource control with dynamic frequency selection (DFS) and close-loop
* `5 n3 C) w: ~% l ^+ |power control (CLPC).
Overall video propagation delay of less than 30 ms.
Receive sensitivity is –86 dBm for video rate of 6 Mbps, and –78 dBm for video rate of 20
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4 m& v+ E5 N; G: |( {4 System Security
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The communication is authenticated and the media stream is encrypted to assure for
& I8 }, f4 b- V% tprotection of copyrighted material. Flexible pairing procedure between each Tx Unit and Rx Unit
0 Y. ~3 L( Y" Sensures private communications between each pair of units. This also allow for coexistence of
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multiple pairs of simultaneous operations without cross talk.
3 E) d, J; ^. B9 D$ ^( H% m 此主题相关图片
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