Nanotron Technology

MCP (Multi Choice Precoding)

MCP (Multi Choice Precoding) processes radio echoes which are inevitable in wireless communication. The technology uses even those reflected parts of the signal energy that must be suppressed in existing systems with great effort. Today's transmission technologies very often have to give up, where MCP systems work perfectly.

Key Features of Multi-Choice Precoding

• Applicable to any form of wireless communication (for example, mobile receivers or computer networks)
• Requires no sophisticated electronics in the receiver because the signal has already been “custom-made” by the transmitter
• Does not require extensive digital signal processing in the receiver, which drastically reduces power consumption
• The transmitter works with lower power and, therefore, exposure to radiation is significantly reduced

Problems with Multipath Propogation and Disturbances

• Multipath Propogation
  The main problem in receiving radio signals are undesirable echoes caused by “multipath propagation”. What does this mean? Transmitter signals reach the receiver usually on different paths. Only a part of them can take the direct way (line-of-sight) while another part will be reflected several times before reaching its final destination. Because the length of path traveled differs, each single part of the signal reaches the receiver at a different point in time even though they started simultaneously. Think about sound echoes in the mountains.
  
• Disturbances
  The problem is that delayed parts of the signal overlap with the first parts of the following signal leading to disturbances (“interference”) and loss of information. In existing technologies, great effort is required to filter the original information out of this mixture of signal and echo. For customers, they must pay high prices for the devices and only operate their mobil device for a short time.

MCP Solves These Problems

MCP technology solves these problems by replacing electronics for signal processing in the user's device (the receiver) with processing in the transmitter (a base station). Prices for technical equipment are not so sensitive with receivers while batteries usually do not provide a power supply for the base station.

Until now the problem of disturbing radio echoes has been solved by implementing sophisticated systems for the elimination of delayed signals directly in the user's device. These chips (such as digital signal processors, or DSPs) are expensive and have high power consumption. With MCP, mobile wireless devices without a DSP can be inexpensively produced while their operation time can be significantly increased before the battery has to be recharged.

More Benefits

• Echoes Dealt With in the Transmitter
  MCP technology moves the intelligence for dealing with the echoes to the transmitter. The signal is modified before transmission to such an extent that it reaches the receiver in a perfect form (precoding). This means that MCP anticipates the change of the signal during transmission. Hence, the receiver does not need any DSP.
• MCP takes advantage of Echoes
  While previous technologies consider echoes to be a nuisance, MCP takes advantage of them. Echoes also contain signal energy and carry information. By applying precoding this energy can be used in the transmission process and not wasted. MCP means that the more echoes reach the receiver, the better the reception. What used to be difficult environmental conditions – that is, highly built-up city districts – are ideal conditions for applying MCP.
• Human Friendly
  Because MCP makes use of formerly disturbing parts of signal energy, the transmitter works with less power. Therefore, human exposure to radiation is reduced.
• Patent Protected
  Both MDMA and MCP were developed by Nanotron Technologies and are protected worldwide by 15 patents.
• CSS: A Customized Application of MDMA and MCP
  CSS is a customized application of MDMA and MCP for the requirements of battery–powered applications, where the reliability of the transmission as well as low power consumption are of special importance.