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x-mimo system with multiple transmitters and multiple receivers

A technology for receivers and transmitters, applied in diversity/multi-antenna systems, transmission systems, space transmit diversity, etc., can solve problems such as increased system overhead and increased hardware costs

Active Publication Date: 2016-01-13
BLACKBERRY LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although such schemes are generally more efficient use of the available bandwidth, there is additional hardware cost associated with the required data exchange between the transmitters, and there is also an associated increase in system overhead
[0008] Other approaches for more efficient use of available bandwidth include configuring more transmit and / or receive antennas for a given number of data streams, which also increases hardware cost

Method used

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  • x-mimo system with multiple transmitters and multiple receivers
  • x-mimo system with multiple transmitters and multiple receivers
  • x-mimo system with multiple transmitters and multiple receivers

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0225] Example 1: Multiple relays for downlink

[0226] refer to Figure 15 , an example of a system configuration using a pair of relays in downlink transmission is generally shown at 380 . In this example, the base station has a transmitter 382 with four antennas and transmits to two receivers 388 and 390 via two relays 384 and 386 . Transmitter 382 transmits six data streams. Transmit data stream b to relay 384 11 and b 21 , transmit data stream b to relay 386 12 and b 22 , to each relay 384 and 386 transmit data flow b 1c , and also transmit data flow b to each relay 384 and 386 2c . Relay 384 forwards data stream b to receiver 388 11 , b 12 and b 1c . Relay 386 forwards data stream b to receiver 388 21 , b 22 and b 2c . Receiver 388 thus receives data stream b from both relay 384 and relay 386 1c , and receiver 390 also receives data stream b from two relays 2c .

example 2

[0227] Example 2: Multiple relays for uplink

[0228] refer to Figure 16 , an example of a system configuration using a pair of relays in uplink transmission is generally shown at 400 . In this example, there are two transmitters 402 and 404 each with four antennas, and transmit via two relays 406 and 408 to a single receiver 410 . Transmitter 402 transmits three data streams b 11 , b 12 and b 1c . Transmit data stream b to relay 406 11 and b 21 , transmit data stream b to relay 408 12 and b 22 , to each relay 406 and 408 transmit data flow b 1c , and also transmit data flow b to each relay 406 and 408 2c . Relay 406 forwards data stream b to receiver 410 11 , b 12 and b 1c . Relay 408 forwards data stream b to receiver 410 21 , b 22 and b 2c . Receiver 401 thus receives data stream b from both relays 406 and 408 1c .

example 3

[0229] Example 3: Multiple relays in an interfering link

[0230] refer to Figure 17, generally at 420 an interfering channel downlink system is shown. System 420 includes two transmitters 422 and 424 each having four antennas, for a total of eight antennas. Both transmitters may be located in the same base station or may be located in different base stations. System 420 also includes two relays 426 and 428 each having four antennas for forwarding data streams to two receivers 428 and 430, each also having four antennas. Consider two transmission signaling schemes that may be implemented on system 420 including a first case where the signals provided to relays 426 and 428 are correlated and a second case where the signals provided to the relays are not correlated.

[0231] Case 1: Correlation signal in relay

[0232] Considering a time period T, during the first part [0, T / 2] of the time period, the transmitter 422:

[0233] transmit data stream b intended for receiv...

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PUM

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Abstract

A method and apparatus for wireless transmission of transmitting and receiving multiple data streams in a wireless communication system having multiple nodes are disclosed. Each node has multiple antennas. The method includes: receiving, at a receiver node, first and second data streams from respective first and second nodes; causing the receiver node to generate a receive filter for decoding each received data stream; and causing the receiver node Receive filter information for each of the first and second data streams is transmitted, the receive filter information facilitating precoding of the first and second data streams for simultaneous transmission within a common frequency band to the receiver node.

Description

[0001] Cross reference for related applications [0002] The application request for this application requirement on September 24, 2009 U.S. temporary patent applications of 61 / 245,339 is combined here through overall reference. [0003] This application is part of the non -temporary application (3) part of the US temporary patent application submitted on September 24, 2009 according to 37C.F.R. §1.53 (c) (3).U.S. temporary patent application requires the priority of 61 / 100,118 submitted to the US temporary patent application submitted on September 25, 2008. Technical field [0004] The invention mainly involves wireless communication between the base station and the mobile platform, and more specifically involves communication between multiple transmitters with multiple input and multiple output (MIMO) antennas and multiple receivers. Background technique [0005] In routine, one of the three configurations in wireless systems has been used in wireless systems.Reference figure 1 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/24H04B1/18H04B7/04H04W88/02
CPCH04B7/024H04B7/0626H04B7/0456H04B7/14H04L25/0202
Inventor M.马达-阿利S.A.莫塔哈里A.罕达尼M.巴利M.贾J.马P.朱W.童
Owner BLACKBERRY LTD