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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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- A. v( o% ?0 U: F9 d: I. @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
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different country spectrum requirements.
* ] l" T4 ]: Y1 [# ?3) Dynamic frequency selection to resist interferences.
% R- @* K4 @5 w2 D. [1 z$ j4) Close-loop power control to minimize power consumption and be a friendly neighbor to
5 f; A2 A& K& ]& W8 i; kother WLAN networks at 5 GHz.
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5) Secure networking to assure privacy and content rights protection.
: E6 [" |3 P7 {) F I6) 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).
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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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; r! z( n! r/ J; X9 n2 k1 |& A1 A" v6 {9) HCI interface to the host CPU to enable flexible application development at the host level.
1 Y! u- C. Z- C10) Transmission of IR control signals to the video source devices from the TV location.
9 v0 g# w: t6 ?+ c. y6 d/ y2. System Diagram
, d- j. f; }$ @2 }4 d: Q7 aWAV3000 wireless module creates a proprietary 5 GHz wireless network for MPEG
6 u6 Q2 {5 v. e/ V2 }$ W% Utransport 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
$ A+ P4 C I. tused 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
# J: E- s1 C. d1 vdevice (TV, flat panel or video monitors). So a pair of the WAV3000 provides a complete,
2 H% i" W: L- A- rglueless wireless connection from TS (of video source) to TS (of video display) with guaranteed
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QoS.
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The WAV3000 includes a configurable expansion connector (CEC). All I/O signals can be
- h6 Y2 j5 q8 k( n% [. p3 L# Prouted 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
/ J2 A" j& V9 `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
) K. s- ?; Z% fvariety of video sources (analog and digital) for different applications. It also provides
$ j2 c" Q4 f5 d: ucapabilities 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
$ n9 V1 q9 i sWiViTM wireless networking technology at 5 GHz.
Supports 4.9 to 5.9 GHz frequency band and is controlled by software to comply with
8 I8 A7 |4 Q* t- V4 ]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
9 P; I! V5 q. [5 ]7 i1 Vpower 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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* l' z, L0 ^% F" t: H5 _8 S4 System Security
# Z' \% D' x5 s \: i! K6 aThe communication is authenticated and the media stream is encrypted to assure for
`7 v$ y. O* Z/ `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
" [0 R3 k1 R9 [2 g1 a5 N. x% B0 Y" Mmultiple pairs of simultaneous operations without cross talk.
) i# B) Z9 _) `8 ^! H$ q: N, G! P' Z 此主题相关图片
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