Results 221 to 230 of about 11,848 (246)

Improved binary turbo coded modulation with 16QAM in HSDPA

2003 IEEE Wireless Communications and Networking, 2003. WCNC 2003., 2004
High speed downlink packet access (HSPDA) is proposed as the evolution of WCDMA recently, aiming at providing higher downlink transmission rate with peak rate about 8-10 Mbps. Turbo code combined with high order modulation can provide bandwidth efficient transmission with substantial coding gain over traditional trellis coded modulation (TCM).
Zesong Fei, Lei Wan, Jingming Kuang 0001
openaire   +1 more source

Synchronization of turbo coded modulation systems at low SNR

ICC '98. 1998 IEEE International Conference on Communications. Conference Record. Affiliated with SUPERCOMM'98 (Cat. No.98CH36220), 2002
This paper examines the synchronization of turbo coded modulation systems at low SNR where these systems are designed to operate. Maximum likelihood estimation theory is used to derive a causal, discrete-time synchronization structure for estimating the carrier phase and symbol timing of a general QAM signal, using a decision-directed structure which ...
Lijun Lu, Stephen G. Wilson
openaire   +1 more source

Combined turbo coding and unitary space-time modulation

Proceedings. 2001 IEEE International Symposium on Information Theory (IEEE Cat. No.01CH37252), 2002
We present a scheme employing turbo codes together with unitary space-time constellations for Rayleigh block fading channels when no channel state information (CSI) is available. We present via simulations that coding gains up to 16 dB is possible over the original uncoded system at a bit error rate of 10/sup -5/.
Israfil Bahceci, Tolga M. Duman
openaire   +1 more source

Parallel concatenated turbo codes for continuous phase modulation

2000 IEEE Wireless Communications and Networking Conference. Conference Record (Cat. No.00TH8540), 2002
There are several ways to use iterative decoding techniques with coded continuous phase modulation (CPM). This paper presents a method using parallel concatenation of convolutionally-coded CPM. All CPM schemes can be decomposed into a ring convolutional code and a memoryless signal mapper.
Mark R. Shane, Richard D. Wesel
openaire   +1 more source

Symbol-Interleaver Design for Turbo Trellis-Coded Modulation

IEEE Communications Letters, 2004
A design method for a code-matched symbol-interleaver for turbo trellis-coded modulation is proposed. The method constructs an interleaver by code matched criteria to eliminate some input error events of low symbol Hamming weight (SHW) sequences of the code which can produce low SHW codewords.
Yao-Jun Wu, Haruo Ogiwara
openaire   +1 more source

Turbo codes and turbo coded modulation systems

2021
openaire   +1 more source

Turbo Codes: a flexible solution for adaptative coded modulation

2004
Turbo Codes: a flexible solution for adaptative coded ...
Kerouedan, Sylvie, Douillard, Catherine, Berrou, Claude   +2 more
openaire   +1 more source

Two-Source Asymmetric Turbo-Coded Cooperative Spatial Modulation Scheme with Code Matched Interleaver

Electronics (Switzerland), 2020
Chunli Zhao, Fengfan Yang, Rahim Umar
exaly  

Turbo-coded modulation for systems with transmit and receive antenna diversity over block fading channels: system model, decoding approaches, and practical considerations

IEEE Journal on Selected Areas in Communications, 2001
A Stefanov, Tolga M Duman
exaly  

Complexity reduced turbo‐bit‐interleaved coded modulation with iterative decoding

IET Communications, 2015
Donghoon Kang, Wangrok Oh
exaly