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Wireless communication system and methodology for communicating via multiple information streams

A wireless communication system and information flow technology, applied in radio transmission systems, diversity/multi-antenna systems, communication between multiple stations, etc., can solve problems such as small broadcasting service capacity and inefficient use of wireless spectrum

Inactive Publication Date: 2009-09-09
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, for larger SINRs, doubling the SINR results in a relatively small increase in broadcast traffic capacity
Although reception is improved, this approach results in an inefficient use of the precious wireless spectrum

Method used

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  • Wireless communication system and methodology for communicating via multiple information streams
  • Wireless communication system and methodology for communicating via multiple information streams
  • Wireless communication system and methodology for communicating via multiple information streams

Examples

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Embodiment Construction

[0030] figure 1 A base station 100 is shown that may be used in a conventional OFDM based wireless communication system. The base station 100 includes both an OFDM transmitter 105 and an OFDM receiver 110 . Mobile stations may be similarly configured to communicate with base station 100 . A data source 115 provides information or data to a quadrature amplitude modulator (QAM) circuit 120, which produces QAM modulation symbols at the QAM circuit output. Serial-to-parallel converter 125 converts the QAM modulation symbols into parallel form, ie, a series of sub-symbols. An inverse fast Fourier transform (IFFT) stage 130 receives the parallel converted signals and transforms these signals from the frequency domain to the time domain. IFFT stage 130 produces N time domain samples at its output, where N represents the IFFT / FFT size used by the OFDM communication system. A parallel-to-serial converter 135 is coupled to the output of IFFT stage 130 for converting the time domain ...

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Abstract

The invention discloses a wireless communication system wherein an information source communicates with a mobile station via multiple intermediary base stations located in respective cells of a broadcast zone. In one embodiment, each base station sends multiple information streams that may be received by a mobile station located in the broadcast zone. By receiving multiple information streams from multiple base stations, the mobile station may enhance reception. In one embodiment, a base station transmits an information stream that includes a base layer and another information stream including an enhanced layer. If a receiver in a mobile station receives an enhanced layer with more than a predetermined amount of quality, then the receiver uses information in the received enhanced layer to supplement information in the received base layer.

Description

technical field [0001] The disclosure herein relates generally to wireless communication systems, and more particularly, to wireless communication systems that employ signal processing techniques to increase system capacity and more efficiently use available bandwidth. Background technique [0002] The great challenge facing communication equipment designers is how to squeeze more information into a given amount of radio frequency spectrum or bandwidth. Frequency Division Multiplexing (FDM) is a known technique for compressing the transmission of data or information into several closely spaced channels or subcarriers within a predetermined signal bandwidth. FDM systems can avoid interference between subcarriers by using frequency guard bands to separate the spectrum of the subcarriers. Unfortunately, this interference avoidance technique will increase system overhead and reduce bandwidth efficiency. [0003] Orthogonal Frequency Division Multiplexing (OFDM) provides a more...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26H04L27/26
CPCH04L1/007H04B7/0669H04L1/0656H04L27/2602H04L5/0023H04L5/0046H04L1/0061H04H20/67H04L1/0625H04B7/0697H04B7/022H04H20/30H04L5/006H04L2001/0098H04L1/0066H04L5/0048H04L65/611
Inventor 韩臸奎法鲁克·卡恩科内利厄斯·范伦斯伯格
Owner SAMSUNG ELECTRONICS CO LTD
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