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Superposition coding method and device in multi-user communication systems

A signal and group information technology, applied in the direction of selection device, radio/inductive link selection arrangement, etc., can solve the problems of imperfect elimination of high-power signal difficulty, complexity and cost, and achieve the effect of simple design

Active Publication Date: 2009-09-09
QUALCOMM INC
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0022] In view of the foregoing discussion, it is apparent that there is a need for novel methods and apparatus that allow communication systems to operate using controlled superposition coding broadcast and / or multiple access communication methods to take advantage of the higher speeds achievable in the channel , while overcoming the practical difficulties of imperfectly canceling high-power signals and the complexity and cost associated with the joint decoder approach

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  • Superposition coding method and device in multi-user communication systems
  • Superposition coding method and device in multi-user communication systems
  • Superposition coding method and device in multi-user communication systems

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Embodiment Construction

[0059] The present invention is directed to transmitter and receiver techniques for encoding that enable decoding of regular signals without being compromised by imperfect cancellation of protected signals.

[0060] Figure 17 A typical communication system 1700 using apparatus and methods in accordance with the present invention is shown. A typical communication system 1700 includes a plurality of base stations, a base station 1 (BS 1) 1702 and a base station N (BS N) 1702'. BS 1 1702 is connected to a plurality of end nodes (EN), EN 1 1708, EN N 1710 via wireless links 1712, 1714, respectively. Similarly, BS N 1702' is connected to a plurality of end nodes (EN), EN 11708', EN N 1710' via wireless links 1712', 1714', respectively. Cell 1 1704 represents the wireless coverage area in which BS 1 1702 can communicate with an EN, such as EN1 1708. Cell N 1706 represents the wireless coverage area in which BS N 1702' may communicate with an EN, such as EN 1 1708'. ENs 1708, 17...

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Abstract

The first and second sets of information are transmitted using relatively large transport blocks comprising a plurality of minimum transmission units (MTUs), where each MTU corresponds to a unique combination of resources. The first set of MTUs is used to convey the first set of information, the first set of MUTs comprising at least a majority of the MTUs in a transport block. defining, for example, selecting a second set of said MTUs for conveying said second set of information, said second set of MTUs comprising fewer MTUs than the first set, and at least some MTUs being included in the first set . The first and second sets of information are communicated by transmitting at least some of the MTUs included in the first and second sets of MTUs with corresponding information modulated thereon. The information may be conveyed by superimposing the first and second information on a shared MTU.

Description

technical field [0001] The present invention is directed to improved methods of encoding and transmitting information in wireless communication systems. Background technique [0002] Superposition coding in a multi-user communication system will now be discussed. A multi-user communication system includes several transmitters and receivers communicating with each other and may use one or more communication methods. In general, multi-user communication methods can be classified into one of two cases: [0003] (a) a single transmitter communicates with several receivers, which is commonly referred to as a broadcast communication method, and [0004] (b) Several transmitters communicate with one common receiver, which is generally called a multi-access communication method. [0005] Broadcast communication methods are often referred to as "broadcast channels" in communication and information theory literature, and will be referred to as such in the remainder of this document...

Claims

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Application Information

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IPC IPC(8): H04Q7/20
Inventor 拉吉弗·拉罗拉穆拉里·萨利尼瓦森厉隽怿
Owner QUALCOMM INC
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