On the spectral efficiency of CDMA with space-time spreading

2003 ◽  
Author(s):  
P. Sudarshan ◽  
B.L. Hughes
Keyword(s):  
Spectral Efficiency ◽  
Space Time

Suitable combination of channel coding and space–time schemes for moderate-to-high spectral efficiency MIMO systems

2010 ◽  
Vol 64 (7) ◽  
pp. 595-606 ◽  
Author(s):  
Mohammad-Ali Khalighi ◽  
Jean-François Hélard ◽  
Seyed Mohammad-Sajad Sadough ◽  
Salah Bourennane
Keyword(s):  
Spectral Efficiency ◽  
Channel Coding ◽  
Mimo Systems ◽  
Space Time ◽  
High Spectral Efficiency ◽  
Suitable Combination

Adaptation of Algebraic Space Time Codes to Frequency Selective Channel

2012 ◽  
pp. 109-129
Author(s):  
Ahmed Bannour ◽  
Mohamed Lassaad Ammari ◽  
Yichuang Sun ◽  
Ridha Bouallegue
Keyword(s):  
Spectral Efficiency ◽  
Wide Band ◽  
Space Time ◽  
Algebraic Space ◽  
Channel Condition ◽  
Full Diversity ◽  
Mobile Channel ◽  
Space Time Codes ◽  
Channel Selectivity ◽  
Selective Channel

The Algebraic Space Time Codes (ASTC) are constructed based on cyclic algebras; they showed a good spectral efficiency, a full diversity, and a full rate under non selective channel condition. However, the radio - mobile channel is a selective channel whose features vary during the time. This selectivity is owed to the multi-path phenomenon and generates interferences between symbols (IES). The overall objective of this chapter is to proof that ASTC is adapted to channel selectivity, in order to analyze and improve its performances in wide-band system.

scholarly journals Space-Time Block Coded Spatial Modulation Based on Golden Code

2018 ◽  
Author(s):  
Tien Dong Nguyen ◽  
Xuan Nam Tran ◽  
Vu Duc Ngo ◽  
Minh Tuan Le
Keyword(s):  
Spectral Efficiency ◽  
Block Code ◽  
Space Time ◽  
Spatial Modulation ◽  
Time Block ◽  
Space Time Block Code ◽  
New Space ◽  
Golden Code ◽  
The Impact ◽  
Theoretical Results

In this paper, a new Space-Time Block Coded Spatial Modulation (SM) scheme based on the Golden Code, called the Golden Coded Spatial Modulation (GC-SM), is proposed and analyzed. This scheme still keeps some main benefits of the Golden Code by satisfying the non-vanishing Space Time Block Code (STBC) criteria. In the signal constellation domain, the GC-SM spectral efficiency is twice that of the STBC-SM. In addition, simulation and theoretical results show that the GC-SM performance surpasses several SM schemes at the same spectral efficiency and antenna configuration. Furthermore, we study the impact of channel spatial correlation on the GC-SM performance. Finally, the GC-SM detection complexity is studied and compared with the existing SM schemes. DOI: 10.32913/rd-ict.vol2.no15.702

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