Signal transmission method of large-scale antenna system

A large-scale antenna and signal transmission technology, applied in the field of 5G communication, can solve a large number of problems that are not suitable for 5G communication systems
CN106301503AActive Publication Date: 2017-01-04SHANGHAI TECH UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
SHANGHAI TECH UNIV
Publication Date
2017-01-04

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Abstract

The invention provides a signal transmission method of a large-scale antenna system. The signal transmission method is characterized in that based on the sparsity of channels in an angle domain, uplink transmission and downlink transmission are performed by utilizing a sparse matrix decomposition method, wherein in the uplink transmission process, each user has different user codes and only uses one resource block to transmit a pilot signal; in the downlink transmission process, a base station directly designs precoding strategies according to the uplink channel directions and only needs to distribute one resource block to transmit the pilot signal; a user estimates a channel coefficient value of the downlink channel according to the received pilot signal, then detects data and does not need to feed the channel signal back to the base station. The signal transmission method provided by the invention has the advantage that in the uplink transmission and the downlink transmission, only one resource block needs to be used for transmitting the pilot signal; therefore, the resource utilization rate of the system is obviously increased.
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Description

technical field

[0001] The invention relates to a signal transmission scheme suitable for a large-scale antenna system, which is used to solve the problems of blind signal detection and channel estimation in the field of wireless communication, and is especially suitable for 5G communication. Background technique

[0002] The essence of a wireless communication system lies in how the receiving end recovers the signal at the sending end as accurately as possible. According to whether the receiver needs channel state information in signal detection, signal detection schemes can be decomposed into two categories: coherent signal detection and non-coherent signal detection (also called blind signal detection).

[0003] In a traditional communication system, especially in a multiple-input multiple-output (MIMO) system, the coherent detection scheme is a commonly used scheme due to its better signal recovery accuracy. Channel estimation is a very important part of a coherent dete...

Claims

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