Results 161 to 170 of about 1,515 (190)

VLSI-implementation issues of turbo trellis-coded modulation

2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03)., 2003
Turbo trellis-coded modulation (TTCM) is a very promising approach for future communication systems. It combines the advantages of channel coding with multilevel signals and the powerful turbo-codes concept. In this paper we consider VLSI implementation aspects of TTCM.
Frank Kienle, Gerd Kreiselmaier, Norbert Wehn   +2 more
openaire   +1 more source

Recursive space-time trellis codes for turbo coded modulation

Globecom '00 - IEEE. Global Telecommunications Conference. Conference Record (Cat. No.00CH37137), 2002
Space-time coding schemes are focused on merging antenna diversity with appropriate channel coding in order to exploit benefits of spatial and temporal diversity. We propose the concept of recursive space-time trellis codes for parallel-concatenated space-time turbo coded modulation.
openaire   +1 more source

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

Design and performance of turbo space-time coded modulation

Globecom '00 - IEEE. Global Telecommunications Conference. Conference Record (Cat. No.00CH37137), 2002
In this paper we introduce a new scheme for parallel concatenated turbo space-time coding. We refer to turbo space-time coded modulation (turbo-STCM). Turbo-STCM use systematic space-time codes as constituent codes. Puncturing is used to obtain full rate codes.
Dongzhe Cui, Alexander M. Haimovich
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
Rahim Umar, Shoaib Mughal
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, T M Duman
exaly