85M,100M,200M和500M,以及1G的Powerline Adapter,不同速率的产品遵循不同的协议。比如200M的D-link产品和贝尔金产品都遵循协议HomePlug AV,理论上,是能混用的。当然,我用的时候感觉不好。 (水城百事)
http://en.wikipedia.org/wiki/HomePlug
HomePlug AV
The HomePlug AV specification, which was introduced in August 2005, provides sufficient bandwidth for applications such as HDTV and VoIP. HomePlug AV offers a peak data rate of 200 Mbs at the physical layer, and about 80 Mbs at the MAC layer. HomePlug AV devices are required to coexist, and optionally to interoperate, with HomePlug 1.0 devices.
Utilizing adaptive modulation on up to 1155 OFDM sub-carriers, turbo convolution codes for error correction, two-level MAC framing with ARQ,[6] and other techniques, HomePlug AV can achieve near the theoretical maximum bandwidth across a given transmission path.[4] For security reasons, the specification includes key distribution techniques and the use of 128 bit AES encryption. Furthermore, the specification's adaptive techniques present inherent obstacles to eavesdropping and cyber attacks.[7][8]
Some Qualcomm Atheros-based adapters comply with the HomePlug AV specification but employ a proprietary extension that increases the PHY-rate to 500 Mbit/s primarily by using a wider spectrum.[9]
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Complete thread:
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两款Powerline Networking产品,价格不错。免运费。如果你家里需要通过电力线来传递网络信号,可以尝试。能彻底解决某个房间无线信号不好的问题。网件的这一对只有85M,但真的也够用了。 - vaseline ; 12-11-27,11:24 (#148428)
Reply (水城百事)
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Yesterday, Dell had TRENDnet 500 Mbps Compact Powerline Ethernet AV Adapter Kit - $29.99 - Trendnet ; 12-11-27,11:48 (#148452) Reply
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这个价格不错啊。只是我家的已经是200M的Power Line网络,D-link的和贝尔金的组网的。虽然说500M的适配器能向下兼容200M的,但还是等需要再买罢。提醒一下哦,85M,100M和200的适配器不能混用的,不要买错了。500M的适配器理论上能向下兼容200M的。 - vaseline ; 12-11-27,11:59 (#148466)
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有一事请教,如果想多点接收,发送端只能是一个吧? 那这样买两套是不是就浪费了?我猜测,发送器不能作为接收器吧?谢谢, - 我行我速 ; 12-11-27,12:46 (#148505) Reply
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没有发送接收之说。通信是双向的。一只接modem,其他的,你想要几个房间通,就另外再买几个。比如,你3个房间想通信号,就要买4个,也就是两套。你4个房间想通信号,就要买5个,也就是3套,显然多余一个。也可以先买一对试试? - vaseline ; 12-11-27,14:09 (#148536) Reply
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比如只买一套,一个KIT,就是两个,一个接modem,一个接到卧室的电力插座,就能把网络信号接到卧室。不知道这样你是否理解。 - vaseline ; 12-11-27,14:11 (#148538) Reply
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