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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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m+ r$ q9 p- |6 b8 I4 v7 X1. Key Features
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1) Complete transceiver design of wireless communication at 5 GHz.
- v, S( U' j i2) Supports 4.9 to 5.9 GHz frequency band and is controlled by software to comply with
) j3 G' B2 z$ Y, O2 R+ {different country spectrum requirements.
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3) Dynamic frequency selection to resist interferences.
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4) Close-loop power control to minimize power consumption and be a friendly neighbor to
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other WLAN networks at 5 GHz.
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5) Secure networking to assure privacy and content rights protection.
( h7 U, [( j8 R; o j0 S1 B. s4 ?6) Supports most of the digital video formats at TS layer including MPEG-2, MPEG-4,
" }$ `, @8 |* q# `2 OH.264 and VC-1 (WM-9).
& j( ]: @; o( y3 G7) Supports point-to-point video connection with full QoS and point-to-multipoint video
6 o) ]6 c$ Y! lbroadcasting.
3 F/ h: k+ N1 N2 O( x" G# N. n8) Configurable expansion I/O connector enabling easy integration with existing host
& ], w6 p! U& N! ]3 D$ ?systems.
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9) 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
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WAV3000 wireless module creates a proprietary 5 GHz wireless network for MPEG
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transport 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
) N6 T$ e2 l9 X% n0 q0 |- `used as video sender, WAV3000 can be embedded in a video source device (DVD, VCR, PVR,
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STB, or PC); and when used as video receiver, WAV3000 can be embedded in a video display
6 f/ U7 H9 [; @5 z' adevice (TV, flat panel or video monitors). So a pair of the WAV3000 provides a complete,
( H: |/ J! v/ w* T" T5 i) Cglueless wireless connection from TS (of video source) to TS (of video display) with guaranteed
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QoS.
3 C$ L4 \( }6 N! r- OThe 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.
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Figure 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
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variety 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.
0 ?# c8 G1 B9 b3 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
% \7 g( A; U: s4 k3 SWiViTM 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
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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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, b3 ?7 V+ r' e1 LThe communication is authenticated and the media stream is encrypted to assure for
8 r# A5 B* V2 F+ V1 Xprotection of copyrighted material. Flexible pairing procedure between each Tx Unit and Rx Unit
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ensures 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.
& Q" V% S9 Q, B6 M) r# G 此主题相关图片
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发表于 2007-2-5 06:13:22
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