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Equipment and method for supporting multi-consumer reuse

A user equipment, multi-user technology, applied in the signal channel and other directions, can solve the problems of limited frequency diversity effect, small number of subcarriers, limited frequency domain diversity effect, etc., to achieve good frequency diversity effect, effective frequency diversity gain, and performance improvement Effect

Active Publication Date: 2012-07-04
BEIJING SAMSUNG TELECOM R&D CENT +1
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  • Description
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Problems solved by technology

In this way, when the number of bits of user equipment information is relatively small, the information of user equipment is only transmitted on a small number of subcarriers, which limits the effect of frequency domain diversity to a certain extent
This problem is more obvious when transmitting ACK / NACK in the downlink. Assuming that the ACK / NACK of each user equipment is transmitted by frequency division multiplexing, considering that the number of subcarriers allocated to each user equipment for ACK / NACK will be relatively small, the frequency Diversity effects are more limited

Method used

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  • Equipment and method for supporting multi-consumer reuse
  • Equipment and method for supporting multi-consumer reuse
  • Equipment and method for supporting multi-consumer reuse

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Embodiment

[0055] Figure 8 It is a flow chart when the base station of the present invention processes ACK / NACK and other data mapped to bit sequence transmission. Performing repetitive encoding on user equipment data can be seen as a special case of mapping its data into a sequence of bits. As shown in the figure, after the base station maps the data (801) of the user equipment 1 into a bit sequence (802), the base station performs PAM modulation (803) on the user equipment data, and then the base station uses the factor p1 (804) to PAM modulated symbols (803) weighting (805); at the same time, the base station maps the data (806) of other user equipments into a bit sequence (807) and then performs corresponding PAM modulation (808), and then the base station uses the corresponding factor p (809) to PAM modulation The following symbols (808) are weighted (810); next, the base station comprehensively processes the signals of multiple user equipments, and maps the weighted PAM modulatio...

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Abstract

This invention relates to a method for supporting multiplex of multi-users by base stations including the following steps: a base station executes PAM modulation to data of user device and maps the Pam symbols of the user device onto branch 1 or branch Q of a sub-carrier to combine the Pam symbols of the devices to modulated signals transmitted on a sub-carrier, in which, signals of user devices are transmitted on sub-carriers twice of the current method or more.

Description

technical field [0001] The present invention relates to a device and method for multi-user multiplexing, and more specifically relates to a device and method for supporting multi-user multiplexing in a multi-carrier system. Background technique [0002] Now, the 3GPP standardization organization has begun to carry out the long-term evolution (LTE) of its existing system specifications. Among many physical layer transmission technologies, Orthogonal Frequency Division Multiplexing (OFDM) technology has become a promising one among all downlink schemes because of its high spectrum utilization rate and low processing complexity. [0003] OFDM technology is essentially a multi-carrier modulation communication technology. Its basic principle is to decompose a high-rate data stream into several low-rate data streams and transmit them simultaneously on a group of mutually orthogonal sub-carriers. OFDM technology has performance advantages in many aspects due to its multi-carrier n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/02
Inventor 李迎阳李小强张玉建李周镐
Owner BEIJING SAMSUNG TELECOM R&D CENT
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