Advanced multi-sensor processing
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Abstract
The invention considers a plurality of receiving nodes (120-1, 120-2 and 120-3) such as base stations in a wireless network. Each receiving node (120) converts a superposition of signals received from a plurality of transmitting nodes such as mobile terminals (10) to produce soft complex signal information. A basic idea according to the invention is to collect the soft complex signal information associated with the considered plurality of receiving nodes, for example in a central node (130) and jointly detect signal information transmitted from at least a subset of the plurality of transmitting nodes (10) based on the collected soft complex signal information. The collected soft signal information generally retains phase and amplitude information, and the transmitted signals are preferably detected in a joint detection process based on a complex channel representation and collected soft signal information. In a truly distributed realization, adjacent receiving nodes or base stations exchange soft complex signal information with each other, thus forming at least partially overlapping groups for distributed collection of information, detection and subsequent decoding in each base station.
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Citations
74 Claims
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1-37. -37. (canceled)
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38. A method for detecting signal information in a wireless communication network having a number of nodes for communication, said method comprising the steps of:
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each of a plurality of receiving nodes (120) converting a superposition of signals received from a plurality of transmitting nodes (10) to produce soft complex signal information;
collecting soft complex signal information associated with said plurality of receiving nodes (120) over a transport network;
jointly detecting signal information from at least a subset of said plurality of transmitting nodes based on the collected soft complex signal information. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54)
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55. A system for detecting signal information in a wireless communication network having a number of nodes for communication, said system comprising:
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a plurality of receiving nodes (120), each configured for converting a superposition of signals received from a plurality of transmitting nodes (10) to produce soft complex signal information;
means for collecting soft complex signal information associated with said plurality of receiving nodes (120) over a transport network; and
means (134) for jointly detecting signal information from at least a subset of said plurality of transmitting nodes based on the collected soft complex signal information. - View Dependent Claims (56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72)
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73. A network node (120;
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130) in a wireless communication network, said network node comprising;
means for collecting, from each one of a plurality of receiving nodes (120), corresponding soft complex signal information produced from a superposition of signals received from a plurality of transmitting nodes (10); and
means (134) for jointly detecting signal information from said plurality of transmitting nodes (10) based on the collected soft complex signal information and a complex channel representation related to said plurality of receiving nodes (120) and said plurality of transmitting nodes (10).
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130) in a wireless communication network, said network node comprising;
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74. A network node (120) in a wireless communication network, said network node comprising:
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means for converting a superposition of signals received from a plurality of transmitting nodes (10) to produce soft complex signal information;
means for collecting complementary soft complex signal information from at least one associated node (120), each associated node producing complementary soft complex signal information from a superposition of signals received from said plurality of transmitting nodes (10); and
means for jointly detecting signal information based on the acquired soft complex signal information and a complex channel representation related to the network node, each associated node and said plurality of transmitting nodes (10).
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Specification