[FW] WiFi聯盟加入 7Gbps WiGig無線標準頒布

WiFi聯盟加入 7Gbps WiGig無線標準頒布
驅動之家[原創] 作者:Skyangeles 編輯:Skyangeles 2010-05-10 16:08:58

去年年底我們曾經報導過,由多家業界知名廠商於2009年5月組成的Wireless Gigabit Alliance(無線吉比特聯盟)宣佈,已經成功開發出了WiGig 1.0標準,可在60GHz頻段上實現7Gbps的超高速無線傳輸。半年後,我們終於有了WiGig技術的進一步消息。Wigig聯盟日前正式公佈了WiGig 1.0標準,並將和WiFi聯盟共同進行推廣。

WiGig技術的主要特色包括60GHz高頻段,7Gbps(約900MB/s)高速度,10到20米傳輸距離,支持傳輸HDMI或DisplayPort視頻信號,向下兼容802.11n WiFi技術等。從該聯盟個個身世顯赫的的成員名單就可以看出,這一標準未來的巨大潛力。

WiGig聯盟的董事會成員公司包括:Intel、微軟、NVIDIA、諾基亞、戴爾、思科、三星、LG、松下、東芝、NEC、聯發科、Atheros、Broadcom、Marvell和Wilocity。而「Contributors」貢獻者級別的會員還包括:AMD、安捷倫、NXP、Realtek、意法半導體、德州儀器、韓國SK電信、三星機電、Beam Networks、Ralink、Tensorcom、HARMAN、PeRaSo和中國國家通信計量站(TMC)。

在WiGig宣佈之處,還有人擔心WiGig與WiFi分庭抗禮可能帶來的問題。然而實際上,兩大聯盟有很多主要成員廠商都是共通的。今天,兩大聯盟終於宣佈簽署合作協議,將共享技術標準,下一代WiFi聯盟技術認證計劃就將支持運作在60GHz頻段上的WiFi技術,實際上也就是WiGig標準。

WiGig聯盟表示,在1.0版標準頒布後,預計一年內就會有實際產品出爐。而60GHz的WiGig標準產品中絕大部分(如果不是全部的話)都將是3頻設備,即向下兼容2.4GHz/5GHz的WiFi標準。




http://news.mydrivers.com/1/163/163708.htm


長期暴露在60GHz下, 會不會影響健康?

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多一個唔多少一個唔少...
無問題既

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900MB/S ....... 咪可以周街打Online Game!!!!

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對依家既人類黎講,實用波段最高係100Ghz左右(高過100Ghz係有,但係耗電搞唔掂),咁快就已經開發到60Ghz喇- -

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本帖最後由 kyva1929 於 2010-5-10 11:12 編輯
人類長期都暴露係 500000Ghz 既電磁波之下.
人類長期都暴露係 500000Ghz 既電磁波之下.
係架, 500000Ghz 會死架, 間中都聽過有人比太陽曬死架啦.

影唔影響健康係睇強度,唔係睇頻率.

我反而想知道, 幾時一間房五十部機都可以一齊用無線上網睇片.
wilsonkf 發表於 2010-5-10 04:01


classical physics 的 prediction. 可惜, photon 的 energy 的確係由頻率而唔係 intensity 決定 (intensity 為 function of number of photons)

不過 50GHZ 的 photons 比起 visible light 所有的 energy 更少, visible light 係 400~800 THz

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本帖最後由 kyva1929 於 2010-5-11 20:24 編輯
EM wave 的 energy 係由 intensity 決定.

photon energy? 你計下一粒photon 有幾多 energy 先講. 未到 c ...
wilsonkf 發表於 2010-5-10 20:17


intensity is a function of number of photons and the energy of each single photon, the reverse is not true; intensity is DEFINED in such a way.

intensity = W/m^2  = number of photons * energy of each single photon / unit squre * second (edited, thanks minibanana); total energy  = number of photons * hv.

the cumulative energy, or the total energy is irrelevant as to whether or not the bunch of photons could harm human; the energy of each single photon is the single most important factor. i.e. there is a minimum energy required to do harm in the DNA structure.

nevertheless, it has been assumed that the total energy that one absorbs from such a wave is well below a level that can do harm, such as the heating effect of infra red wave.

However, given the same amount of total energy, a wave consisting of packets of energetic (high frequency) photons DOES HARM while that consisting of packets of less energetic photons DOES NO HARM. Again, please do realize that the energy of each single little photon is the single most important factor in determining whether or not such photon could do harm. (and remember the assumption made, which is the ACTUAL CASE as in wigig, the total energy of wave is well below any level that could do harm)

within the context of radioactive substance, the total energy do measure how much harm is done. (in the case of gamma ray) But it;s based on the assumption that each single particle is energetic enough to distort the DNA structure, and so the cumulative harm done by such and such.

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所以,你可以推翻我"影唔影響健康係睇強度,唔係睇頻率" 既講法?

真係讀死書,用都唔識用。呢D野我早就 ...
wilsonkf 發表於 2010-5-11 11:51


There were no points to state the obvious i.e. a tremendous amount of energy regardless of the form of energy would harm human.

And it can be seen clearly (I hope so) from the context we are not talking about the obvious -- but a little bit subtle implication in terms of the frequency of such wave.

影唔影響健康係睇強度,唔係睇頻率

and therefore, based on the assumptions made, this statement is obviously wrong within the context of this whole topic.

Total energy tells us NOTHING WHATSOEVER if a photon is energetic enough to interfere with the DNA structure; it comes into play ONLY AFTER a photon is determined to be harmful to human i.e. having a high enough frequency.

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