scholarly journals Threshold Based Iteration Stopping Criterion for Turbo Codes and for Scheme Combining a Turbo Code and a Golden Space-Time Block Code

2014 ◽  
Vol 14 (1) ◽  
pp. 139-142 ◽  
Author(s):  
A. SAVIN ◽  
L. TRIFINA ◽  
M. ANDREI
Keyword(s):  
Turbo Codes ◽  
Turbo Code ◽  
Block Code ◽  
Space Time ◽  
Stopping Criterion ◽  
Time Block ◽  
Space Time Block Code

MIMO-Orthogonal space time block code system joint with BCH-TC in Rayleigh fading channel for performance of transmit antenna selection

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Nitin Tejram Deotale
Keyword(s):  
Mimo Systems ◽  
Antenna Selection ◽  
Turbo Code ◽  
Block Code ◽  
Space Time ◽  
Time Block ◽  
Transmit Antenna Selection ◽  
Content Type ◽  
Space Time Block Code ◽  
Orthogonal Space

Purpose To enhance the performance transmit antenna selection (TAS) of spatial modulation (SM), systems technique needs to be essential. This TAS is an effective technique for reducing the multiple input multiple output (MIMO) systems computational difficulty, and bit error rate (BER) can increase remarkably by various TAS algorithms. But these selection methods cannot provide code gain, so it is essential to join the TAS with external code to obtain cy -ode gain advantages in BER. Design/methodology/approach In this paper, Bose–Chaudhuri–Hocquenghem (BCH)-Turbo code TC is combined with the orthogonal space time block code system. Findings In some existing work, the improved BER has been perceived by joining forward error correction code and space time block code (STBC) for MIMO systems provided greater code gain. The proposed work can provide increasing code gain and the effective advantages of the TAS-OSTBC system. Originality/value To perform the system analysis, Rayleigh channel is used. In the case with multiple TAS-OSTBC systems, better performance can provide by this new joint of the BCH-Turbo compared to the conventional Turbo code for the Rayleigh fading.

scholarly journals Multiple TAS-OSTBC in MIMO with Outer BCH Concatenation under Nakagami-m Fading

2019 ◽  
Vol 8 (6) ◽  
pp. 3054-3058
Keyword(s):  
Channel Coding ◽  
Mimo Systems ◽  
Antenna Selection ◽  
Turbo Code ◽  
Block Code ◽  
Space Time ◽  
Time Block ◽  
Coding Gain ◽  
Space Time Block Code ◽  
Outer Code

Transmit Antenna Selection (TAS) technique with Orthogonal Space Time Block Code (OSTBC) addresses the problem of hardware complexity in multiple antenna systems and improves Bit Error Rate (BER) significantly by using various antenna selection algorithms. TAS technique is not able to provide the coding gain. To achieve the coding gain benefits with improvement in BER, it is necessary to concatenate TAS system with an outer code. In literature, it is observed that the concatenation of Forward Error Correction (FEC) codes and Space Time Block Code (STBC) for MIMO systems provides the high coding gain with improved BER. In this paper, a multiple TAS-OSTBC system is proposed with concatenation of channel coding techniques such as BCH and TURBO. The proposed system is concatenated with BCH as outer code in series with TURBO as inner code. This combination provides the capacity benefits of TAS-OSTBC system with improved coding gain. The channel is assumed to be faded by Nakagami- m fading. It is observed that for multiple TAS-OSTBC system this new concatenation of BCH-TURBO code gives improvement of 5 dB at 10-6 as compared to concatenation of TURBO code at m =0.5 for Nakagami- m fading parameter.

An FPGA Implementation of TCM Cascade Space Time Block Code

2012 ◽  
Vol 195-196 ◽  
pp. 901-903
Author(s):  
Jun Wu ◽  
Xiao Bo Wu
Keyword(s):  
Block Code ◽  
Space Time ◽  
Coded Modulation ◽  
Diversity Gain ◽  
Modulation Scheme ◽  
Time Block ◽  
Coding Gain ◽  
Space Time Block Code ◽  
Concatenated Code ◽  
Trellis Coded

Trellis coded (TCM) modulation can obtain the coding gain without increase the transmission power and the bandwidth but it can not obtain diversity gain, and space-time block code (STBC) can provide diversity gain in a simple encoding and decoding way, though its coding gain is not very satisfied. This article will achieve a STBC-class networking trellis coded modulation scheme based on FPGA to further study the performance of the concatenated code.

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