WirelessHD

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WirelessHD is supposed to be the first and only wireless digital interface to combine uncompressed HD video content, hi-definition surround audio, intelligent format recognition and control data. For consumers, elimination of cables for audio and video dramatically simplifies home theater system installation and eliminates the traditional need to locate source devices in the proximity of the display. The technology will support the legacy systems by means of specialized adapter solutions, that will be capable of supporting the new formats. This is the first global standard for 60 GHz applications based on the IEEE 802.15.3c specification. It enables high performance, interoperable, multi-gigabit speed wireless communications among consumer electronics, personal computing and mobile devices.

The WirelessHD specification has been architected and optimized for wireless display connectivity, achieving in its first generation implementation high-speed rates from 2 Gbps to 5 Gbps for the CE, PC, and portable device segments. Its core technology promotes theoretical data rates as high as 20 Gbps, permitting it to scale to higher resolutions, color depth, and range.

LG Electronics Inc., Matsushita Electric Industrial Co., Ltd. (Panasonic), NEC Corporation, SAMSUNG ELECTRONICS CO., LTD, SiBEAM, Inc., Sony Corporation and Toshiba Corporation, formed a consortium to define a specification for the next generation wireless digital network interface specification for consumer electronics products. It is easily seen that these promoter companies have historically been responsible for creating the world’s most successful consumer electronics standards. Based on that experience, this group is promoting rapid adoption, standardization and multi-vendor interoperability of WirelessHD technology worldwide.

WirelessHD Architecture Overview

The WirelessHD specification defines a wireless video area network (WVAN) for the connection of CE, PCs and portable devices. A key attribute of the WirelessHD system is its ability to support the wireless transport of a lossless FullHD 1080p/60 A/V stream with a high quality of service (QoS) within a room at distances of up to ten meters. Wireless data throughput at distances of the order of tens of meters requires a large allocation of frequency spectrum. A large amount of unrestricted spectrum is available in many countries around the 60 GHz band. The high throughput requires effective transmit power greater than 10 Watts. A side effect of such a high-throughput connection, however, is that it would normally be highly directional, requiring clear line-of-sight between devices. WirelessHD has overcome this limitation by defining a breakthrough protocol for directional connections that adapt very rapidly in response to changes in the environment. This is accomplished by employing smart antenna technology that dynamically steers the transmitting antenna beam while at the same time focusing the receiver antenna in the direction of the incoming power from the transmitter.

 
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