Lecture Series in Mobile Telecommunications and Networks (1583KB)

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Welcome and introduction Michael Walker: Good evening, everybody, and welcome to the third lecture in the third of a series of lectures in mobile communications and networks, jointly hosted by the Royal Academy of Engineering and Vodafone. Before we start, let me introduce myself, because I am aware that there are a number of people in the audience whom I have not met. I am the Research and Development Director for the Vodafone Group and so I have a great interest in mobile communications and in telecommunications in general. It gives me great pleasure to introduce our speaker this evening: he is very well known in the mobile communications industry and he is Peter Vary from Aachen University. He got to Aachen by various routes. He was at Erlangen after he did his PhD and before that he was at Darmstadt. He then worked at Philips before going on the Aachen. Whilst he was at Philips, he led the team that invented the GSM codec, the voice codec, which is probably the most widely used voice codec ever invented. If you think of the number of people who now carry a GSM phone, which is getting on for 3 billion, they are all using that codec. This was a tremendous piece of work. Since then, Peter has retained his interest in voice and in other aspects of digital signal processing. We really are very pleased that Peter has been able to accept the invitation to address us this evening. I will not say any more, other than that the title of his talk is From Plain Old Telephony to Flawless Mobile Audio Communications. Peter, could you address us. [Applause] The Royal Academy of Engineering 45
From plain old Telephony to flawless mobile audio communication Professor Dr Ing Peter Vary Institute of Communication Systems and Data Processing, Germany First of all, I would like to say thank you: it is a great honour for me to give a talk here in the Royal Academy of Engineering, which I am very pleased to do. Speech communication is likely to remain the most important service in mobile communications and we may discuss that later, but that statement is not very exciting because our expectations are not too high. From experience, we know that a phone sounds like a phone, because it is a phone. We know, and it is obviously a matter of fact, that a mobile phone never sounds better than a fixed-line phone, because it is mobile, and it is wireless technology. In my talk, however, I will aim to convince you that this might not be true in the future, or even in the near future. The €1 mobile phone The state of the art phone is a very smart device. It is a telephone, a camera, an mp3 player, an FM radio, a calendar, a pocket calculator, a game box, and it is – or it seems to be – cheap, at just €1. The question is, is there still room for improvement? €1 is not too much. Our question should read: are there some improvements for which the customer is willing to pay more than €1? That might depend on the customer. To improve the phone, or to make it better, there are different criteria. One approach has been taken by the company, Vertu. This is an independent company belonging to Nokia and you can buy these nice phones: the price starts here at €20,000, rising to €30,000, €40,000 and €50,000. You can buy these in the shop at Frankfurt Airport, for example, where you buy Rolex watches. However, within the case, there is no Rolex or anything like that – it is just a plain Nokia phone. iPhone “Princess Plus” - €144,000 Some people like to have more than just a plain phone – they like the iPhone. For those, there is also a solution by an Austrian designer. There is the Princess Plus at €144,000 but, inside, it is the same technology as a standard iPhone. iPhone 3G “Kings Button” - €1,790,000 If that is not what you are looking for, because you would like to spend a little more, then this is probably the top iPhone you can buy at the moment. It has a lot of diamonds around the frame, and the central button is a very big diamond. Amazingly, the company does very well. It has 500 employees – the company is Vertu – but the market is probably niche. [Laughter] There are a few clusters of customers in some regions of the world, as you can imagine. So this problem seems to have been solved and therefore I would like to address a different problem: to improve the phone not in terms of the outer appearance, but inside. I would like to discuss improving the audio quality. 46 The Royal Academy of Engineering
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Lecture Series in Mobile Telecommunications and Networks (1583KB)

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