Results 61 to 70 of about 2,576 (163)

Hybrid Iterative Multiuser Detection for Channel Coded Space Division Multiple Access OFDM Systems [PDF]

open access: yes, 2006
Space division multiple access (SDMA) aided orthogonal frequency division multiplexing (OFDM) systems assisted by efficient multiuser detection (MUD) techniques have recently attracted intensive research interests.
Hanzo, L., Jiang, M., Ng, S. X.
core   +2 more sources

Three-Dimensional EXIT Chart Analysis of Iterative Detection Aided Coded Modulation Schemes

open access: yes, 2006
The iterative convergence of iteratively detected coded modulation schemes having different block lengths, decoding complexity and an unequal error protection capability is studied, when communicating over AWGNchannels using 8PSK modulation.
Hanzo, L., Ng, S.X., Tee, R.Y.S.
core  

Space-time coding for UMTS. Performance evaluation in combination with convolutional and turbo coding [PDF]

open access: yes, 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

Performance Evaluation of Parallel Concatenated Chaos Coded Modulations

open access: yesJournal of Communications Software and Systems, 2008
In this article we study the performance of a class of parallel concatenated encoders similar to a turbo trellis coded modulation, but where the constituent encoders are chaos coded modulators.
Francisco J. Escribano   +2 more
doaj  

Burst-by-Burst Adaptive Decision Feedback Equalised TCM, TTCM and BICM for H.263-Assisted Wireless Video Telephony

open access: yes, 2006
Decision Feedback Equaliser (DFE) aided wideband Burst-by-Burst (BbB) Adaptive Trellis Coded Modulation (TCM), Turbo Trellis Coded Modulation (TTCM) and Bit-Interleaved Coded Modulation (BICM) assisted H.263-based video transceivers are proposed and ...
Cherriman, P.   +3 more
core  

Comparative Study of TCM, TTCM, BICM and BICM-ID Schemes

open access: yes, 2001
Coded modulation is a bandwidth efficient scheme that combines the functions of coding and modulation. In this contribution, a comparative study of Trellis Coded Modulation (TCM), Turbo Trellis Coded Modulation (TTCM), Bit-Interleaved Coded Modulation ...
Hanzo, L.   +3 more
core  

On the Convergence Speed of Turbo Demodulation with Turbo Decoding

open access: yes, 2012
Iterative processing is widely adopted nowadays in modern wireless receivers for advanced channel codes like turbo and LDPC codes. Extension of this principle with an additional iterative feedback loop to the demapping function has proven to provide ...
Baghdadi, Amer   +2 more
core   +3 more sources

An optimization method for designing high rate and high performance SCTCM systems with in-line interleavers [PDF]

open access: yes, 2004
We present a method for designing high-rate, high-performance SCTCM systems with in-line interleavers. Using in-line EXIT charts and ML performance analysis, we develop criteria for choosing constituent codes and optimization methods for selecting the ...
Iida, Yasuhiro   +4 more
core  

Probabilistic Shaping for Finite Blocklengths: Distribution Matching and Sphere Shaping [PDF]

open access: yes, 2019
In this paper, we provide for the first time a systematic comparison of distribution matching (DM) and sphere shaping (SpSh) algorithms for short blocklength probabilistic amplitude shaping.
Alvarado, Alex   +3 more
core   +2 more sources

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