Results 81 to 90 of about 167,787 (204)

Turbo Detection of Space-time Trellis-Coded Constant Bit Rate Vector-Quantised Videophone System using Reversible Variable-Length Codes, Convolutional Codes and Turbo Codes

open access: yes, 2004
In this treatise we characterise the achievable performance of a proprietary video transmission system, which employs a Constant Bit Rate (CBR) video codec that is concatenated with one of three error correction codecs, namely a Reversible Variable ...
Yeap, B. L.   +3 more
core   +1 more source

Performance for Turbo code on Ricean fading channel

open access: yesTongxin xuebao, 2005
For a given channel estimation variance, a new metric for Turbo decoding on Ricean channel was proposed, and a novel formula for channel reliability factor Lc was concluded.
YAO Ru-gui1, WANG Yong-sheng1, XU Juan2
doaj   +2 more sources

Improved Iterative Parallel Interference Cancellation Receiver for Future Wireless DS-CDMA Systems

open access: yesEURASIP Journal on Advances in Signal Processing, 2005
We present a new turbo multiuser detector for turbo-coded direct sequence code division multiple access (DS-CDMA) systems. The proposed detector is based on the utilization of a parallel interference cancellation (PIC) and a bank of turbo decoders.
Andrea Bernacchioni   +2 more
doaj   +1 more source

QFEC ASIP: A Flexible Quad-Mode FEC ASIP for Polar, LDPC, Turbo, and Convolutional Code Decoding

open access: yesIEEE Access, 2018
In this paper, we extend polar decoding function to our previous design, and propose a flexible quad-mode forward error correction application specific instruction-set processor (QFEC ASIP) that supports polar, low-density parity-check (LDPC), turbo, and
Wan Qiao, Dake Liu, Shaohan Liu
doaj   +1 more source

Turbo equalization and its improvement in BICM-ID based on hard-decision

open access: yesTongxin xuebao, 2009
Conventional receivers executed equalization and channel decoding independently. Turbo equalization was a technique which combined equalization and decoding.
ZHAO Chun-hui1, LV Qiang1, BI Wen-bin2
doaj   +2 more sources

Reduced Complexity In-Phase/Quadrature-Phase M-QAM Turbo Equalization Using Iterative Channel Estimation

open access: yes, 2003
A reduced complexity trellis-based turbo equalizer known as the in-phase (I)/quadrature-phase (Q) turbo equalizer (TEQ-IQ) invoking iterative channel impulse response (CIR) estimation is proposed. The underlying principle of TEQ-IQ is based on equalizing
Yeap, B.L., Wong, C.H., Hanzo, L.
core   +1 more source

Improved Max-Log-MAP Turbo Decoding by Maximization of Mutual Information Transfer

open access: yesEURASIP Journal on Advances in Signal Processing, 2005
The demand for low-cost and low-power decoder chips has resulted in renewed interest in low-complexity decoding algorithms. In this paper, a novel theoretical framework for improving the performance of turbo decoding schemes that use the max-log-MAP ...
Karimi Hamid Reza   +2 more
doaj   +1 more source

Soft-Bit Assisted Iterative AMR-WB Source-Decoding and Turbo-Detection of Channel-Coded Differential Space-Time Spreading Using Sphere Packing Modulation

open access: yes, 2007
Jointly optimised iterative source- and channel-decoding is used for enhancing the error resilience of the Adaptive Multi Rate WideBand (AMR-WB) speech codec.
Alamri, O.   +8 more
core   +2 more sources

PERFORMANCE EVALUATION OF TURBO CODED OFDM SYSTEMS AND APPLICATION OF TURBO DECODING FOR IMPULSIVE CHANNEL [PDF]

open access: yesICTACT Journal on Communication Technology, 2010
A comparison of the performance of hard and soft-decision turbo coded Orthogonal Frequency Division Multiplexing systems with Quadrature Phase Shift Keying (QPSK) and 16-Quadrature Amplitude Modulation (16-QAM) is considered in the first section of this ...
Savitha H. M., Muralidhar Kulkarni
doaj  

Parallelism Efficiency in Convolutional Turbo Decoding

open access: yesEURASIP Journal on Advances in Signal Processing, 2010
Parallel turbo decoding is becoming mandatory in order to achieve high throughput and to reduce latency, both crucial in emerging digital communication applications. This paper explores and analyzes parallelism techniques in convolutional turbo decoding
Baghdadi Amer   +2 more
doaj  

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