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Method for calibrating sub-carrier of radio signal and communication device

A radio signal and communication device technology, applied in the field of subcarrier alignment (align) mechanism, to achieve the effect of reducing inter-symbol interference and high peak transmission rate

Active Publication Date: 2013-07-17
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, existing mobile communication systems can only support a peak transmission rate of 100 million bits per second using 5-10 MHz radio bandwidth

Method used

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  • Method for calibrating sub-carrier of radio signal and communication device
  • Method for calibrating sub-carrier of radio signal and communication device
  • Method for calibrating sub-carrier of radio signal and communication device

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Embodiment Construction

[0026] figure 1 Shown at the top is a high-level schematic diagram of a communication environment 100 according to an embodiment of the present invention. Communications environment 100 includes a base station 102 (eg, a wireless or telephone tower) operatively in communicative connection with a mobile device 104 (eg, a wireless or telephone device). In at least some embodiments, base station 102 communicates with mobile device 104 using a wired connection and / or a wireless connection. In at least some embodiments, the base station 102 communicates with the mobile device 104 using an OFDM transmission scheme, wherein the OFDM transmission scheme can be compared with Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA) ), Code Division Multiple Access (CDMA Division Multiple Access, CDMA) or a hybrid technology combination of the above-mentioned multiple access technologies to serve multiple mobile devices in the same network. In some alternative i...

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Abstract

A method of aligning sub-carriers of radio signals of two adjacent frequency channels and devices therefor are described. The method comprises aligning a first plurality of sub-carriers of a first radio signal and a second plurality of sub-carriers of a second radio signal within an overlapped frequency region in-between the two adjacent frequency channels by shifting a center frequency of the first radio signal with a frequency offset. The first radio signal and the second radio signal are adapted for transmission over the two adjacent frequency channels and the first frequency channel is one of the two adjacent frequency channels.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Application No. 61 / 027,838, filed 2008 / 02 / 12, entitled "A Sub-carrier Alignment Mechanism for Multi-band OFDMA Systems." This provisional application is hereby incorporated by reference in its entirety. technical field [0003] The present invention relates to a subcarrier alignment mechanism of a multi-carrier system, in particular to a method and a communication device for aligning subcarriers of a radio signal. Background technique [0004] Compared with the existing wireless communication system, the next generation wireless communication system will adopt a higher peak transmission rate (peak transmission rate). For example, a Fourth Generation (4G) mobile communication system requires a peak transmission rate of Gigabit per second (Gbps). However, existing mobile communication systems can only support a peak transmission rate of 100 million bits per second uti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
CPCH04L25/03343H04L27/2657H04L25/03159H04L5/0044H04L25/03821H04L27/2626H04L5/0007
Inventor 傅宜康廖培凯
Owner MEDIATEK INC