Results 31 to 40 of about 2,731,887 (320)
Exit chart analysis of parallel data convolutional codes [PDF]
, 2005 We recently proposed a new class of turbo-like codes called parallel data convolutional codes (PDCCs). The distinct characteristics of PDCCs include parallel data input bits and a self-iterative soft-in/soft-out a posteriori probability(APP) decoder. In
Leis, John +2 more
core +1 more source
Coded modulation scheme employing turbo codes
Electronics Letters, 1995 The authors present a turbo coding scheme for bandwidth-efficient modulation that outperforms turbo coding with Gray mapping by employing Ungerboeck codes as component codes. The scheme can be decoded iteratively and achieves very good bit error rates at low signal to noise ratios after a small number of iterations. 8PSK is used as an example, although
Robertson, P., Wörz, T.
openaire +3 more sources
A Flexible LDPC/Turbo Decoder Architecture [PDF]
, 2010 Low-density parity-check (LDPC) codes and convolutional Turbo codes are two of the most powerful error correcting codes that are widely used in modern communication systems. In a multi-mode baseband receiver, both LDPC and Turbo decoders may be required.
Cavallaro, Joseph R., Sun, Yang
core +2 more sources
Space-time coding for UMTS. Performance evaluation in combination with convolutional and turbo coding [PDF]
, 2000 Space-time codes provide both diversity and coding gain when using multiple transmit antennas to increase spectral efficiency over wireless communications systems.
Gaspa Maynou, Roger +1 more
core +1 more source
Turbo Decoding and Detection for Wireless Applications [PDF]
, 2007 A historical perspective of turbo coding and turbo transceivers inspired by the generic turbo principles is provided, as it evolved from Shannon’s visionary predictions.
Hanzo, L., Robertson, P, Woodard, J.P.
core +1 more source
EURASIP Journal on Wireless Communications and Networking, 2008 Turbo product codes (TPCs) are an attractive solution to improve link budgets and reduce systems costs by relaxing the requirements on expensive optical devices in high capacity optical transport systems.
Ramesh Pyndiah +4 more
doaj +2 more sources
Design of Three-Dimensional Multiple Slice Turbo Codes
EURASIP Journal on Advances in Signal Processing, 2005 This paper proposes a new approach to designing low-complexity high-speed turbo codes for very low frame error rate applications. The key idea is to adapt and optimize the technique of multiple turbo codes to obtain the required frame error rate ...
Boutillon Emmanuel +2 more
doaj +1 more source
Turbo Trellis Coded Modulation (TTCM) with Imperfect Phase Reference
Electrica, 2019 In this paper, we investigate the performance of Turbo Trellis Coded Modulation (TTCM) over AWGN, and Rician channels and assume that phase disturbance is available.
Osman N. Ucan, Onur Osman
doaj +2 more sources
A MODIFIED UNEQUAL POWER ALLOCATION (UPA) SCHEME FOR PERFORMANCE ENHANCEMENT IN BIT REPETITION TURBO CODES IN HIGH SPEED DOWNLINK PACKET ACCESS (HSDPA) SYSTEM [PDF]
Journal of Engineering Science and Technology, 2015 In this paper, a modified optimal power allocation scheme for different bits in turbo encoder has been proposed to improve the performance of Turbo Codes system in High Speed Downlink Packet Access (HSDPA) service. In a typical turbo code in HSDPA system,
B. BALAMURALITHARA
doaj
Turbo Codes Based on Time-Variant Memory-1 Convolutional Codes over Fq [PDF]
2011 IEEE International Conference on Communications (ICC), 2011 Two classes of turbo codes over high-order finite fields are introduced. The codes are derived from a particular protograph sub-ensemble of the (dv=2,dc=3) low-density parity-check code ensemble.
G. Liva +3 more
semanticscholar +1 more source