Transmitting device, modulation method and modulation device for time division radio communication system
A technology of a wireless communication system and a transmitting device, which is applied in the field of modulation of a time-division wireless communication system, and can solve problems such as inapplicability
Inactive Publication Date: 2012-04-18
ST ERICSSON SEMICON BEIJING
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[0007] In the prior art, adaptive modulation and coding is performed on all data blocks on the same physical channel, and low-order or high-order modulation methods are selected. However, for the above-mentioned new applications, there are data blocks of different modulation types mixed in the same physical channel. When transferring, the above method is obviously not applicable
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[0112] In the description of the embodiment of the present invention, only TD-SCDMA is taken as an example for detailed description, but it should be understood that the method and device in the embodiment of the present invention are also applicable to other time division wireless communication systems.
[0113] The modulation method in the time division wireless communication system of the embodiment of the present invention includes the step of modulating the data stream mapped to the physical channel, wherein, as figure 1 As shown, the following steps are respectively performed on the first data stream on each physical channel:
[0114] Step 11, receiving the first data stream A1, the first data stream A1 needs to be modulated by at least two modulation methods;
[0115] Step 12, according to the upper layer information, record the corresponding relationship between the data bits in the first data stream A1 and the modulation mode to be used;
[0116] Step 13, according to ...
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The invention provides an emitting device, a modulation method and a modulation device in a time-division wireless communication system. The modulation device comprises a recording module used for recording corresponding relationship between data bits in a first data flow and a required modulation mode, a data modulation module used for determining the modulation mode required by current data bits needing processing in the first data flow and carrying out data modulation to continuous data bits including current bits to obtain a second data flow, a weighting module used for multiplying weightfor every symbol in the second data flow to obtain a third data flow, and a spread spectrum scrambling module used for carrying out spread spectrum scrambling to the third data flow by using spread spectrum code and scrambler and outputting a fourth data flow after being obtained. The emitting device, the modulation method and the modulation device can carry out effective modulation processing under the condition that data blocks of different modulation types are mixed and transmitted in a physical channel.
Description
technical field [0001] The invention relates to a modulation technology of a time-division wireless communication system, in particular to a transmitting device, a modulation method and a modulation device in the time-division wireless communication system. Background technique [0002] With the rapid development of wireless communication systems and networks, pure voice services can no longer meet people's requirements for high-speed data services. Providing services such as video, web browsing, and multimedia data download and upload has become an important part of wireless communication systems and services. These services put forward higher demands on the wireless communication system, requiring the system to provide higher transmission rates and smaller transmission delays. [0003] The third-generation mobile spread spectrum communication system (3G) based on Code Division Multiple Access (CDMA) uses existing wireless resources, such as code channels, time slots, frequ...
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IPC IPC(8): H04L1/00H04B1/02H04B1/707
Inventor 赵妍妮刘昕贺超
Owner ST ERICSSON SEMICON BEIJING