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Detection method in hierarchical superposition coding generalized spatial modulation system

A generalized spatial modulation and layered superposition technology, which is applied in the application field of layered superposition technology in generalized spatial modulation systems, can solve the problem of high detection complexity

Active Publication Date: 2016-12-21
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

The existing ML optimal detection algorithm requires a full search codebook, and its detection complexity is extremely high

Method used

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  • Detection method in hierarchical superposition coding generalized spatial modulation system
  • Detection method in hierarchical superposition coding generalized spatial modulation system
  • Detection method in hierarchical superposition coding generalized spatial modulation system

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Embodiment Construction

[0043] The technical solutions in the embodiments of the present invention will be described clearly and in detail below with reference to the drawings in the embodiments of the present invention. The described embodiments are only some of the embodiments of the invention.

[0044] Technical scheme of the present invention is as follows:

[0045] First, in order to allow readers to understand the solution more clearly, two basic concepts used in the present invention are described here.

[0046] (1) SCM technology: Its core idea is to layer the bit information with different QoS requirements. The bit information with high QoS requirements or high priority is independently coded and modulated on the upper layer, and the information with low QoS requirements or low priority is coded and modulated at the lower layer. Independent coding modulation. attached figure 1 It is a constellation point map (4 / 16QAM) that is coded and modulated by two layers, and is linearly superimposed...

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Abstract

The invention discloses a detection method in a generalized spatial modulation system (SCM-GSM) adopting hierarchical superposition coding, and belongs to the technical field of wireless communication. The hierarchical coding modulation (SCM) technology is adopted on constellation mapping to meet the different requirements of quality of service of different data services on the same transmission time slot, and a variety of business demands of a future 5G system can be met for flexibly. Based on the constellation modulation principle based on SCM, a receiving end proposes an iterative hierarchical detection (ILD) algorithm, the method can effectively reduce the search times of signal detection, and the system bit error rate (BER) performance is approximate to theoptimal maximum likelihood (ML) detection.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to the application of layered superposition technology in a generalized space modulation system. Background technique [0002] As a novel multi-antenna transmission scheme, spatial modulation (Spatial Modulation, SM) creatively forms a mapping relationship between input bits and transmitting antenna numbers to carry certain transmission information, and has been widely used in the field of wireless communication. s concern. However, since the traditional SM technology transmits data by activating a transmitting antenna, its transmission rate is significantly lower than the spatial multiplexing technology in the traditional MIMO system. In order to meet future high-speed requirements, a generalized spatial modulation (Generalized Spatial Modulation, GSM) technology is proposed. [0003] As an extension of the SM technology, the core idea of ​​the GSM sche...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04B7/04
CPCH04B7/0413H04L1/0047H04L1/0052
Inventor 陈发堂张丁全李小文王丹王华华刘宇
Owner CHONGQING UNIV OF POSTS & TELECOMM
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