WirelessHD

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WirelessHD^TM is an industry-led effort to define a specification for the next generation wireless digital network interface specification for wireless high-definition signal transmission for consumer electronics products. The consortium behind the standard includes among others Broadcom, Intel, LG, Panasonic, NEC, Samsung, SiBEAM, Sony and Toshiba, and have finalized the specification in January 2008.^[1]

The WirelessHD standard is based on the 7GHz of continuous bandwidth around the 60GHz radio frequency and allows for uncompressed, digital transmission of full HD video and audio and data signals, essentially making it equivalent, in theory, to wireless HDMI. The specification has been designed and optimized for wireless display connectivity, achieving in its first generation implementation high-speed rates from 4 Gbit/s for the CE, PC, and portable device segments. Its core technology promotes theoretical data rates as high as 25 Gbit/s (compared to 10.2-Gbit/s for HDMI 1.3), permitting it to scale to higher resolutions, color depth, and range.

The WirelessHD specification also has provisions for content protection via Digital Transmission Content Protection (DTCP)as well as provisions for network management. With the use of a regular remote control, users can control the WirelessHD devices and choose which device will be supplying the display, such as a set-top box, DVR or Blu-ray disc player.

The signal operates on the 60 GHz Extremely High Frequency band and supports the bandwidth required to support both current and future HD signals. The 60 GHz band requires line of sight between transmitter and receiver, and the WiHD standard overcomes this limitation through the use of beam forming at the receiver and transmitter antennas. The goal range for the first products will be in-room, point-to-point, non line-of-sight (NLOS) at up to 10 meters. The atmospheric absorption of 60 GHz energy by oxygen molecules will limit undesired propagation over long distances and help control intersystem interference and long distance reception of concern to video copyright owners.^[2]

A ubiquitous wireless HD standard would do much to improve interoperability among devices, and would also expand the capabilities of personal video players, PDAs, and other handheld devices.

1 Promoters
2 Competition
3 See also
4 References
5 External links

Promoters

Broadcom Corporation
Intel Corporation
LG Electronics Inc.
Panasonic Corporation
NEC Corporation
SAMSUNG ELECTRONICS, CO., LTD
SiBEAM, Inc.
Sony Corporation
Toshiba Corporation

Competition

WirelessHD is competing somewhat with the upcoming Wireless USB standard, which operates on the 3.1 to 10.6 GHz band and delivers 480 Mbit/s throughput.

WirelessHD also competes with the Wireless High-definition Interface standard, developed by AMIMON and supported by Motorola and Sharp. WDHI uses 40 MHz of bandwidth in the 5 GHz unlicensed band, offering lossless video and achieving up to 250Mbps.