WO2003103207A1 - A radio transmission method utilizing mimo - Google Patents

A radio transmission method utilizing mimo Download PDF

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Publication number
WO2003103207A1
WO2003103207A1 PCT/CN2002/000381 CN0200381W WO03103207A1 WO 2003103207 A1 WO2003103207 A1 WO 2003103207A1 CN 0200381 W CN0200381 W CN 0200381W WO 03103207 A1 WO03103207 A1 WO 03103207A1
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Prior art keywords
carrier
transmitting antennas
transmitting
antennas
different
Prior art date
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PCT/CN2002/000381
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French (fr)
Chinese (zh)
Inventor
Dandan Wang
Gang Wang
Original Assignee
Linkair Communications,Inc.
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Publication date
Application filed by Linkair Communications,Inc. filed Critical Linkair Communications,Inc.
Priority to CN02819178.1A priority Critical patent/CN1561597A/en
Priority to AU2002315723A priority patent/AU2002315723A1/en
Priority to PCT/CN2002/000381 priority patent/WO2003103207A1/en
Publication of WO2003103207A1 publication Critical patent/WO2003103207A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity

Definitions

  • the present invention relates to the field of communication technologies, and in particular, it is a wireless transmission method using MIM0 (Multiple Input Multiple Output System: Mul t iple-Input Mul t iple-Output).
  • MIM0 Multiple Input Multiple Output System: Mul t iple-Input Mul t iple-Output
  • the service capabilities of the third generation of mobile communications will be significantly improved over the second generation. It should be able to support voice packet data to multimedia services; it should be able to provide bandwidth as needed.
  • ITU International Telecommunication Union
  • three requirements must be met in the following three environments. That is: fast moving environment, the highest rate is 144kbi t / s; indoor environment has the highest rate of 2Mbi t / s; outdoor to indoor or pedestrian environment, the highest rate is 384kbi t / s. It is predicted that the speed of the fourth generation mobile communication can reach more than 10 Mbps, and may even reach 30 Mbps to 100 Mbps.
  • the frequency band of the first generation of analog mobile communication is several hundred megahertz
  • the frequency band of the second generation of digital mobile phone systems is several hundred megahertz to gigahertz
  • the frequency band of the third generation of mobile communication in the future will be 2 gigahertz (2GHz). )about.
  • An object of the present invention is to provide a wireless transmission method using MIM0. It combines the concept of non-overlapping multi-carriers in the traditional MIM0 system to increase system capacity and increase the data transmission rate.
  • the technical solution of the present invention is: a wireless transmission method using MIM0, which is characterized in that MIM0 uses at least two transmitting antennas to transmit a carrier wave and at least one receiving antenna to receive the carrier wave; Arbitrarily place multiple carriers on it.
  • the MIM0 system uses at least two transmitting antennas to transmit a carrier, and at least one receiving antenna to receive the carrier refers to: MIM0 can use two transmitting antennas to transmit a carrier, and can use one or more receiving antennas to receive Said carrier.
  • the MIM0 system uses at least two transmitting antennas to transmit a carrier, and receiving at least two receiving antennas means that: MIM0 can use more than two transmitting antennas to transmit a carrier, and one or more of them can be used.
  • the receiving antenna receives the carrier.
  • the above-mentioned need to arbitrarily place multiple carriers on each transmitting antenna means that the carriers used on different transmitting antennas may be different from each other.
  • the need to arbitrarily place multiple carriers on each transmitting antenna means that: multiple carriers can be used on two transmitting antennas respectively; and the carriers used on two transmitting antennas can be different from each other.
  • multiple carriers can be used on more than two transmitting antennas respectively; and the carriers used on more than two transmitting antennas can be different from each other.
  • the fact that the carriers used on the two transmitting antennas can be different from each other means that: two carrier frequency bands can be allocated on the two transmitting antennas respectively, and the center frequencies of the carriers on the two transmitting antennas can be Not equal to each other.
  • the carrier used on two or more transmitting antennas can be different from each other, which means that: " 2 , ..., n m ", "can be assigned to two or more m transmitting antennas, respectively, can be different from each other.” ) Carrier frequency bands, and the carrier center frequencies on m transmitting antennas may be different from each other.
  • the beneficial effects of the present invention are: By adopting the method of the present invention, the capacity of the system can be increased, or it can be applied to high-speed data transmission to improve system performance. This is important in the field of communications that provides image, data and voice services. By combining MIM0 and multi-carrier, the system capacity or transmission rate is increased in a doubling relationship. Moreover, the technology applicable to a single antenna in the prior art can also be basically used in the present invention, for example, code division multiple access technology, channel coding, and the like.
  • the present invention introduces the concept of multi-carrier in the concept of MIM0, that is, arbitrarily placing multiple carriers on different antennas.
  • the present invention changes the application of using only one carrier on different transmitting antennas of the traditional MIM0, and at the same time is different from the application of using the same carrier on different antennas in the conventional MIM0 system. Therefore, the present invention can increase system capacity and increase system capacity by flexibly allocating band resources. Data transfer rate or improve system performance.
  • FIG. 1 is a block diagram of a conventional MIM0 system
  • FIG. 2a is a single carrier distribution diagram of the MIM0 system in the prior art
  • FIG. 2b is a multi-carrier distribution diagram of the MIM0 system in the prior art
  • FIG. 2c is another multi-carrier distribution diagram of the MIM0 system in the prior art
  • Figure 4 shows the simulation curves under various scenarios.
  • the present invention changes the application of using only one carrier on different transmitting antennas of the traditional MIM0, and is different from the application of using the same carrier on different antennas in the conventional MIM0 system. Therefore, the present invention can Increase system capacity, increase data transfer rate, or improve system performance.
  • the block diagram of the traditional MIM0 system is shown in Figure 1. The carrier distribution at this time As shown in Figure 2a, Figure 2b, and Figure 2c.
  • the system block diagram of the present invention is the same as the conventional MIM0 system block diagram, but the carrier distribution and receiver structure are changed.
  • the carrier distribution of the present invention is shown in FIG. 3.
  • two transmitting antennas and receiving antennas are taken as an example.
  • two carrier frequency bands are allocated to the two antennas.
  • the carrier center frequency on antenna 1 be 4fc, 5fc, and the carrier center frequency on antenna 2 is 4. 5fc, 5.5fc
  • the simulation results under various receiving schemes are shown in Figure 4. From this we can see that part of the frequency shift has little effect on the performance in the 1-path fading channel model, but in the 2-path fading channel model, the performance of the incomplete overlap of frequencies on different antennas is better than that of the full overlap.
  • the technical effect of the present invention is that by introducing the concept of a flexible distributed multi-carrier into the MIM0 system, the system capacity can be increased, the data transmission rate can be increased, and the system performance can be improved. This is very beneficial for future image, data and voice transmissions that require high transmission rates and performance. And through the introduction of this concept, many technologies applied to a single antenna can be used in the MIM0 system accordingly.

Abstract

A radio transmission method utilizing MIMO is disclosed. The mothod is characterized in that, MIMO adopts at least two (transmitting antennas to transmit the signal carriers, and at least one reception antenna to receive said signal carriers; also it needs multiple signal carriers arbitrarily disposed on each of the transmitting antennas. By introducing the conception of multiple signal carriers flexible distributed into the MIMO system, the present invention can increase the system capacity, raise the transfer rate of the data, and improve system performance. This is very advantaged for the future image, data and speech transmission which are strict with the transfer rate and performance. And through the introduction of this concept, a lot of technology applied to the single antenna can be used in MIMO system correspondingly.

Description

一种利用 MIM0的无线传输方法 技术领域  Technical Field of Wireless Transmission Using MIM0
本发明涉及通信技术领域， 具体的讲其是一种利用 MIM0 (多进多出系 统： Mul t iple-Input Mul t iple-Output ) 的无线传输方法。  The present invention relates to the field of communication technologies, and in particular, it is a wireless transmission method using MIM0 (Multiple Input Multiple Output System: Mul t iple-Input Mul t iple-Output).
背景技术 Background technique
随着无线通信的发展，数据传输的地位日益突出。特别是在 3G标准中， 都对数据传输作了特别的关注。 而第三代移动通信的业务能力将比第二代 有明显的改进。 它应能支持从话音分组数据到多媒体业务； 应能根据需要， 提供带宽。 ITU (国际电信联盟）规定的第三代移动通信无线传输技术的最 低要求中， 必须满足在以下三个环境的三种要求。 即： 快速移动环境， 最 高速率 144kbi t/s; 室内环境最高速率达到 2Mbi t/s; 室外到室内或步行环 境， 最高速率达 384kbi t/s。 而人们预测到了第四代移动通信的速率可以 达到 10 Mbps 以上， 甚至可能达到 30Mbps ~ 100Mbps。  With the development of wireless communication, the status of data transmission has become increasingly prominent. Especially in 3G standards, special attention has been paid to data transmission. The service capabilities of the third generation of mobile communications will be significantly improved over the second generation. It should be able to support voice packet data to multimedia services; it should be able to provide bandwidth as needed. Among the minimum requirements of the third-generation mobile communication wireless transmission technology specified by the ITU (International Telecommunication Union), three requirements must be met in the following three environments. That is: fast moving environment, the highest rate is 144kbi t / s; indoor environment has the highest rate of 2Mbi t / s; outdoor to indoor or pedestrian environment, the highest rate is 384kbi t / s. It is predicted that the speed of the fourth generation mobile communication can reach more than 10 Mbps, and may even reach 30 Mbps to 100 Mbps.
但无线通信由于其通信传输的媒质的特殊性， 频带资源的紧张在高速 无线数据传输的面前就显得日益突出。 第一代模拟移动通信的频段为几百 兆赫兹， 第二代数字移动电话系统所用的频段为几百兆到上千兆赫兹, 未 来的第三代移动通信其频段将在 2 千兆 （2GHz )左右。 虽然新频段的拓展 工作从来就没有停止过， 但面对频谱的紧张和数据以及将来多媒体业务的 开展， 提高频谱利用率可能是一种更好的方法。 如果无线信道是一个多径 散射足够丰富， 而且采用的技术可以充分的利用这些多径资源的话， 信道 的容量将是巨大的。 在频带宽度不变的情况下， 容量越大， 频谱效率越高。 这样开发新的可以提高频谱利用率的技术就可以在现有频带的基础上 , 以 更高的速率传输数据。 在这种技术背景下利用多天线发送以及接收就成为 可能。 这样就产生了一种多进多出的系统 MIM0 ( Multiple-Input Mul tiple- Output )。 不过传统的 MIM0系统各个天线的载波都是在同一个频 段上。 这就产生了一个问题， 不能很有效的复用频带资源， 而且也不能灵 活的分配频带。 However, due to the particularity of the medium of wireless communication in wireless communication, the tension of frequency band resources becomes increasingly prominent in the face of high-speed wireless data transmission. The frequency band of the first generation of analog mobile communication is several hundred megahertz, and the frequency band of the second generation of digital mobile phone systems is several hundred megahertz to gigahertz. The frequency band of the third generation of mobile communication in the future will be 2 gigahertz (2GHz). )about. Although the expansion of new frequency bands has never stopped, in the face of spectrum tensions and data and the development of future multimedia services, improving spectrum utilization may be a better approach. If the wireless channel is rich in multipath scattering and the technology used can make full use of these multipath resources, the capacity of the channel will be huge. With the same bandwidth, the larger the capacity, the higher the spectral efficiency. In this way, the development of new technologies that can improve the utilization of the spectrum can transmit data at a higher rate based on the existing frequency band. Under this technical background, it becomes possible to transmit and receive using multiple antennas. In this way, a multi-input multiple output system MIM0 (Multi-Input Mul tiple-Output) is generated. However, the carrier of each antenna of the traditional MIM0 system is on the same frequency. Paragraph. This creates a problem, that the frequency band resources cannot be reused very efficiently, and the frequency bands cannot be flexibly allocated.
发明内容 Summary of the Invention
本发明的目的在于， 提供一种利用 MIM0 的无线传输方法。 其通过在传 统的 MIM0系统中结合不重叠的多载波的概念， 用以增大系统容量及提高数 据传输速率。  An object of the present invention is to provide a wireless transmission method using MIM0. It combines the concept of non-overlapping multi-carriers in the traditional MIM0 system to increase system capacity and increase the data transmission rate.
本发明的技术方案为: 一种利用 MIM0 的无线传输方法， 其特征在于， MIM0 至少采用两个发射天线对载波进行发射， 至少采用一个接收天线接收 所述的载波； 并且需在每一个发射天线上任意放置多个载波。  The technical solution of the present invention is: a wireless transmission method using MIM0, which is characterized in that MIM0 uses at least two transmitting antennas to transmit a carrier wave and at least one receiving antenna to receive the carrier wave; Arbitrarily place multiple carriers on it.
所述的 MIM0 系统至少采用两个发射天线对载波进行发射， 至少采用一 个接收天线接收所述的载波是指： MIM0 可采用两个发射天线对载波进行发 射， 可以采用一个或一个以上接收天线接收所述的载波。  The MIM0 system uses at least two transmitting antennas to transmit a carrier, and at least one receiving antenna to receive the carrier refers to: MIM0 can use two transmitting antennas to transmit a carrier, and can use one or more receiving antennas to receive Said carrier.
所述的 MIM0 系统至少采用两个发射天线对载波进行发射， 至少采用两 个接收天线接收所述的载波是指： MIM0 可采用两个以上的发射天线对载波 进行发射, 可以采用一个或一个以上的接收天线接收所述的载波。  The MIM0 system uses at least two transmitting antennas to transmit a carrier, and receiving at least two receiving antennas means that: MIM0 can use more than two transmitting antennas to transmit a carrier, and one or more of them can be used. The receiving antenna receives the carrier.
所述的需在每一个发射天线上任意放置多个载波是指： 可在不同的发射 天线上采用多个载波。  The above-mentioned need to arbitrarily place multiple carriers on each transmitting antenna means: multiple carriers can be used on different transmitting antennas.
所述的需在每一个发射天线上任意放置多个载波是指： 在不同的发射天 线上采用的载波可以互不相同。  The above-mentioned need to arbitrarily place multiple carriers on each transmitting antenna means that the carriers used on different transmitting antennas may be different from each other.
所述的需在每一个发射天线上任意放置多个载波是指： 可在两个发射天 线上分别采用多个载波； 并且在两个发射天线上采用的载波可以互不相同。  The need to arbitrarily place multiple carriers on each transmitting antenna means that: multiple carriers can be used on two transmitting antennas respectively; and the carriers used on two transmitting antennas can be different from each other.
所述的需在每一个发射天线上任意放置多个载波是指： 可在两个以上的 发射天线上分别采用多个载波; 并且在两个以上的发射天线上采用的载波 可以互不相同。  The above-mentioned need to arbitrarily place multiple carriers on each transmitting antenna means: multiple carriers can be used on more than two transmitting antennas respectively; and the carriers used on more than two transmitting antennas can be different from each other.
所述的在两个发射天线上采用的载波可以互不相同是指： 可在两个发射 天线上分别分配两个载波频段， 并且两个发射天线上的载波中心频率可以 互不相等。 The fact that the carriers used on the two transmitting antennas can be different from each other means that: two carrier frequency bands can be allocated on the two transmitting antennas respectively, and the center frequencies of the carriers on the two transmitting antennas can be Not equal to each other.
所述的在两个以上的发射天线上采用的载波可以互不相同是指： 可在两 个以上的 m个发射天线上分别分配" ,， "2，… nm ",„可以互不相同）个载波 频段， 并且 m个发射天线上的载波中心频率可以互不相等。 The carrier used on two or more transmitting antennas can be different from each other, which means that: " 2 , ..., n m ", "can be assigned to two or more m transmitting antennas, respectively, can be different from each other." ) Carrier frequency bands, and the carrier center frequencies on m transmitting antennas may be different from each other.
本发明的有益效果在于： 通过采用本发明所述方法， 可以使系统的容量 得到提高， 或者是应用于高速数据传输以改进系统性能。 这对于提供图像， 数据和语音服务的通信领域十分重要。 通过将 MIM0和多载波相结合使系统 容量或传输速率以成倍的关系增长。 而且， 现有技术中适用于单天线的技 术也基本上可以用在本发明中，例如， 码分多址技术， 信道编码等等。  The beneficial effects of the present invention are: By adopting the method of the present invention, the capacity of the system can be increased, or it can be applied to high-speed data transmission to improve system performance. This is important in the field of communications that provides image, data and voice services. By combining MIM0 and multi-carrier, the system capacity or transmission rate is increased in a doubling relationship. Moreover, the technology applicable to a single antenna in the prior art can also be basically used in the present invention, for example, code division multiple access technology, channel coding, and the like.
本发明是在 MIM0的概念中引入了多载波的概念, 即在不同天线上任意 放置多个载波。 本发明改变了传统 MIM0不同发射天线上只采用一个载波的 应用， 同时又不同于以往 MIM0系统中不同天线上采用相同载波的应用， 因 此， 本发明可以通过灵活分配频带资源而增加系统容量， 提高数据传输速 率或者改进系统性能。  The present invention introduces the concept of multi-carrier in the concept of MIM0, that is, arbitrarily placing multiple carriers on different antennas. The present invention changes the application of using only one carrier on different transmitting antennas of the traditional MIM0, and at the same time is different from the application of using the same carrier on different antennas in the conventional MIM0 system. Therefore, the present invention can increase system capacity and increase system capacity by flexibly allocating band resources. Data transfer rate or improve system performance.
附图说明 BRIEF DESCRIPTION OF THE DRAWINGS
图 1为现有技术的 MIM0系统框图；  FIG. 1 is a block diagram of a conventional MIM0 system;
图 2a为现有技术中的 MIM0系统单载波分布图；  FIG. 2a is a single carrier distribution diagram of the MIM0 system in the prior art;
图 2b为现有技术中的 MIM0系统多载波分布图；  FIG. 2b is a multi-carrier distribution diagram of the MIM0 system in the prior art;
图 2c为现有技术中的 MIM0系统另一多载波分布图；  FIG. 2c is another multi-carrier distribution diagram of the MIM0 system in the prior art;
图 3为本发明的载波分布图；  3 is a carrier distribution diagram of the present invention;
图 4为各种方案下的仿真曲线。  Figure 4 shows the simulation curves under various scenarios.
具体实施方式 detailed description
本发明通过在 MIM0中引入不重叠的多载波， 改变了传统 MIM0不同发射 天线上只采用一个载波的应用， 同时又不同于以往 MIM0系统中不同天线上 采用相同载波的应用， 因此， 本发明可以增加系统容量， 提高数据传输速 率或者改进系统性能。 传统的 MIM0系统框图如图 1所示， 此时的载波分布 如图 2a、 图 2b、 图 2c所示。 By introducing non-overlapping multi-carriers into the MIM0, the present invention changes the application of using only one carrier on different transmitting antennas of the traditional MIM0, and is different from the application of using the same carrier on different antennas in the conventional MIM0 system. Therefore, the present invention can Increase system capacity, increase data transfer rate, or improve system performance. The block diagram of the traditional MIM0 system is shown in Figure 1. The carrier distribution at this time As shown in Figure 2a, Figure 2b, and Figure 2c.
本发明的系统框图与传统 MIM0的系统框图相同， 但载波分布与接收机 结构有所改变。 本发明的载波分布如图 3所示。  The system block diagram of the present invention is the same as the conventional MIM0 system block diagram, but the carrier distribution and receiver structure are changed. The carrier distribution of the present invention is shown in FIG. 3.
例如， 以两个发射天线和接收天线为例， 为简单起见， 两个天线上分别 分配两个载波频段， 设天线 1上的载波中心频率是 4fc, 5fc,而天线 2上的 载波中心频率是 4. 5fc, 5. 5fc 则在各种接收方案下的仿真结果见图 4。 从 中我们可以看出， 频率错开一部分在 1径衰落信道模型下对性能影响不大， 但在 2 径衰落信道模型下， 不同天线上频率不完全重叠比完全重合时的性 能要好。 从这个图中还可以看出， 同一个天线上多个载波的复用情况大致 满足 1/e准则， 即相邻频率互相关系数小于 1/e时， 基本上与他们相互独 立时的性能相同。 但采用此种方法可使资源应用更为灵活， 可以按照实际 情况及需要灵活分配频带。  For example, two transmitting antennas and receiving antennas are taken as an example. For simplicity, two carrier frequency bands are allocated to the two antennas. Let the carrier center frequency on antenna 1 be 4fc, 5fc, and the carrier center frequency on antenna 2 is 4. 5fc, 5.5fc The simulation results under various receiving schemes are shown in Figure 4. From this we can see that part of the frequency shift has little effect on the performance in the 1-path fading channel model, but in the 2-path fading channel model, the performance of the incomplete overlap of frequencies on different antennas is better than that of the full overlap. It can also be seen from this figure that the reuse of multiple carriers on the same antenna roughly meets the 1 / e criterion, that is, when the number of adjacent frequency correlations is less than 1 / e, the performance is basically the same as when they are independent of each other. . However, this method can make resource application more flexible, and can allocate frequency bands flexibly according to actual conditions and needs.
本发明的技术效果在于， 通过将灵活分布的多载波的概念引入到 MIM0 系统中， 可以增加系统容量， 提高数据传输速率， 改进系统性能。 这对于 对传输速率和性能要求很高的未来图像、 数据和语音传输都是十分有利的。 而且通过此概念的引入, 许多应用于单天线的技术可相应地用到 MIM0系统 中。  The technical effect of the present invention is that by introducing the concept of a flexible distributed multi-carrier into the MIM0 system, the system capacity can be increased, the data transmission rate can be increased, and the system performance can be improved. This is very beneficial for future image, data and voice transmissions that require high transmission rates and performance. And through the introduction of this concept, many technologies applied to a single antenna can be used in the MIM0 system accordingly.
以上具体实施方式仅用于说明本发明， 而非用于限定本发明。  The above specific implementations are only used to illustrate the present invention, but not intended to limit the present invention.

Claims

权 利 要 求 Rights request
1. 一种利用 MIM0的无线传输方法， 其特征在于， MIM0至少采用两个 发射天线对载波进行发射， 至少采用一个接收天线接收所述的载波； 并且 需在每一个发射天线上任意放置多个载波。 1. A wireless transmission method using MIM0, characterized in that MIM0 uses at least two transmitting antennas to transmit a carrier, and at least one receiving antenna to receive the carrier; and that a plurality of antennas need to be arbitrarily placed on each transmitting antenna Carrier.
2. 根据权利要求 1所述的方法， 其特征在于， 所述的 MIM0至少采用两 个发射天线对载波进行发射， 至少采用一个接收天线接收所述的载波是指： MIM0 可采用两个发射天线对载波进行发射, 可以采用一个或一个以上接收 天线接收所述的载波。  2. The method according to claim 1, wherein the MIM0 uses at least two transmitting antennas to transmit a carrier, and the receiving of the carrier by using at least one receiving antenna refers to: MIM0 can use two transmitting antennas For transmitting a carrier, one or more receiving antennas may be used to receive the carrier.
3. 根据权利要求 1所述的方法， 其特征在于， 所述的 MIM0至少采用两 个发射天线对载波进行发射, 至少采用一个接收天线接收所述的载波是指: MIM0可采用两个以上的发射天线对载波进行发射， 可以采用一个或一个以 上的接收天线接收所述的载波。  3. The method according to claim 1, wherein the MIM0 uses at least two transmitting antennas to transmit a carrier, and at least one receiving antenna to receive the carrier refers to: MIM0 can use more than two The transmitting antenna transmits a carrier wave, and one or more receiving antennas may be used to receive the carrier wave.
4. 根据权利要求 1 所述的方法， 其特征在于， 所述的需在每一个发射 天线上任意放置多个载波是指： 可在不同的发射天线上采用多个载波。  4. The method according to claim 1, wherein the need to arbitrarily place multiple carriers on each transmitting antenna means that multiple carriers can be used on different transmitting antennas.
5. 根据权利要求 1 所述的方法， 其特征在于， 所述的需在每一个发射 天线上任意放置多个载波是指： 在不同的发射天线上采用的载波可以互不 相同。  5. The method according to claim 1, wherein the need to arbitrarily place multiple carriers on each transmitting antenna means that the carriers used on different transmitting antennas can be different from each other.
6. 根据权利要求 1 所述的方法， 其特征在于， 所述的需在每一个发射 天线上任意放置多个载波是指： 可在两个发射天线上分别采用多个载波； 并且在两个发射天线上采用的载波可以互不相同。  6. The method according to claim 1, wherein the need to arbitrarily place multiple carriers on each transmitting antenna means: multiple carriers can be used on two transmitting antennas respectively; and The carriers used on the transmitting antennas can be different from each other.
7. 根据权利要求 3 所述的方法， 其特征在于， 所述的需在每一个发射 天线上任意放置多个载波是指： 可在两个以上的发射天线上分别采用多个 载波； 并且在两个以上的发射天线上采用的载波可以互不相同。 7. The method according to claim 3, wherein the arbitrarily placing a plurality of carriers on each transmitting antenna means that: a plurality of transmitting antennas can be used respectively on two or more transmitting antennas Carrier; and the carriers used on more than two transmit antennas may be different from each other.
8. 根据权利要求 6 所述的方法， 其特征在于， 所述的在两个发射天线 上采用的载波可以互不相同是指： 可在两个发射天线上分别分配两个载波 频段， 并且两个发射天线上的载波中心频率可以互不相等。  The method according to claim 6, characterized in that the carrier used on the two transmitting antennas can be different from each other means that: two carrier frequency bands can be allocated on the two transmitting antennas respectively, and two The carrier center frequencies on the transmitting antennas may be different from each other.
9. 根据权利要求 7 所述的方法， 其特征在于， 所述的在两个以上的发 射天线上采用的载波可以互不相同是指： 可在两个以上的 m个发射天线上 分别分配 n、 n2 nra个载波频段， 其中 n2 可以互不相同， 并且 m个发射天线上的载波中心频率可以互不相等。 The method according to claim 7, characterized in that the carrier used on the two or more transmitting antennas can be different from each other means that: n can be allocated on two or more m transmitting antennas respectively And n 2 n ra carrier frequency bands, where n 2 may be different from each other, and the carrier center frequencies on m transmitting antennas may be different from each other.
PCT/CN2002/000381 2002-05-31 2002-05-31 A radio transmission method utilizing mimo WO2003103207A1 (en)

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CN1349325A (en) * 2000-10-12 2002-05-15 深圳市中兴通讯股份有限公司 Multiple carrier software radio transceiver and its intelligent antenna performance improving method

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CN1342354A (en) * 1998-09-04 2002-03-27 美国电报电话公司 Combined channel coding and space-block coding in multi-antenna arrangement
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CN1298120C (en) * 2003-12-26 2007-01-31 西安交通大学 Detection method for multiple input multiple output system channel capacity

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