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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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5 k: i1 ]9 u8 L4 ^! ~1. Key Features
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1) Complete transceiver design of wireless communication at 5 GHz.
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2) Supports 4.9 to 5.9 GHz frequency band and is controlled by software to comply with
: M: K: k" }7 Y1 [& N1 Edifferent country spectrum requirements.
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3) Dynamic frequency selection to resist interferences.
9 v& S' i( U, Y" p4) Close-loop power control to minimize power consumption and be a friendly neighbor to
& ~, `8 ~( J* ?6 ~other WLAN networks at 5 GHz.
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5) Secure networking to assure privacy and content rights protection.
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6) Supports most of the digital video formats at TS layer including MPEG-2, MPEG-4,
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7) Supports point-to-point video connection with full QoS and point-to-multipoint video
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broadcasting.
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8) Configurable expansion I/O connector enabling easy integration with existing host
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systems.
! e2 W9 I3 @" W! E7 H2 M9) 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
; x0 [' V+ V; ^' b) h3 JWAV3000 wireless module creates a proprietary 5 GHz wireless network for MPEG
4 S7 U1 l' Q0 b6 [transport stream (TS) communication. The WAV3000 is a complete wireless transceiver module
) v) _0 `3 _" w* E0 W$ Hthat can be integrated as video sender and video receiver according to the host platform. When
# Y/ {- }6 I' I# r: @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
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device (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
* A/ d. ?% V' A7 A# J4 l# {- g: grouted and configured through the CEC enabling easy integration with existing host systems.
8 |% D6 u. X7 F5 jFigure 1 gives a functional block diagram of the WAV3000 and associated personality
, h+ d& s: }9 K7 ~" j. }8 vmodule (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
6 ~4 U5 K; \6 \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
) Y# q2 S2 h( k$ w3 Q( [6 W9 PWiViTM 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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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 System Security
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The communication is authenticated and the media stream is encrypted to assure for
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protection 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
: a1 L5 T" i% G* Lmultiple pairs of simultaneous operations without cross talk.
/ n6 k% K. D9 I 此主题相关图片
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