I have received quite a few responses from readers saying something to the effect: “just wait until XG Technology deploys their VOIP network, and that will prove their claims once and for all”. I guess these readers have completely missed the point I was trying to make. So let me try one more time.
All of my xMax related posts addressed a single fundamental issue: the claim that xMax can operate using far less transmit power than conventional communication systems. (Based on the published claims “far less” means orders of magnitude less, not “a little bit less”). This is a crucial claim, because it it were true (which it isn’t), xMax would have a much larger range than a conventional system if they both used the same power, or it could operate with far less power in the same range. All of my xMax related posting were aimed at explaining why this one specific claim is false.
The fact that this claim is false does not mean that it is not possible to deploy an xMax based VOIP network. It only means that one could use a conventional physical layer to do the same deployment, and that an xMax physical layer does not offer an advantage. Thus, a deployment of xMax does not prove the claim that “xMax can operate using far less transmit power than conventional communication systems”. It only proves that xMax works, which I have no reason to doubt, and said so repeatedly. So do many other conventional communication systems! Unless one performs a careful one-to-one comparison of xMax with another system, the mere fact that xMax is deployed has little if any bearing on the validity of the claim.
There are simple, direct, and conclusive ways to prove or falsify the xMax claim, and I have discussed this in the earlier post “xMax performance claims can be easily tested. Why aren’t they?”. All that is needed is to have an independent entity measure the BER vs. EbN0 curve for xMax and publish it on the xG website ….
To conclude: Yes – xMax works, and if they did a good job implementing the overall system, they should be able to deploy it. No – xMax can not and will not “operate using far less transmit power than conventional communication systems.”