Results 211 to 220 of about 420,182 (254)

Noncoherent-coded modulation constructed from conventional trellis-coded modulation

IEEE Communications Letters, 1998
We propose a method to construct noncoherent-coded modulation (NCM) by modifying the conventional trellis-coded modulation (TCM) as proposed by Ungerboeck (1982). The error performance of the modified TCM using noncoherent decoding can approach that of the conventional TCM using coherent decoding for additive white Gaussian noise.
Ruey-Yi Wei, Mao-Chao Lin
openaire   +1 more source

A noncoherent coded modulation for 16QAM

MILCOM 1999. IEEE Military Communications. Conference Proceedings (Cat. No.99CH36341), 1999
Summary: We present a noncoherent coded 16QAM (NC-16QAM) scheme by modifying the trellis-coded 16QAM (TC-16QAM) scheme. Our simulation results show that the performance of the NC-16QAM with noncoherent detection is close to the one of the original TC-16QAM with coherent detection.
Pingyi Fan, Xiang-Gen Xia 0001
openaire   +1 more source

Polar Coding for Bit-Interleaved Coded Modulation

IEEE Transactions on Vehicular Technology, 2016
A polar coding scheme is proposed for reliable communication over channels with bit-interleaved coded modulation (BICM). In an ideal information-theoretic model, BICM schemes are modeled as a set of multiple binary-input channels that experience different reliabilities. This model is referred to as multichannel . The conventional scheme for encoding
Hessam Mahdavifar, Mostafa El-Khamy, Jungwon Lee, Inyup Kang   +3 more
openaire   +1 more source

Coded Modulation Using Superimposed Binary Codes

IEEE Transactions on Information Theory, 2004
In this correspondence, we investigate in a comprehensive fashion a one-layer coding/shaping scheme resembling a perfectly cooperated multiple-access system. At the transmitter, binary data are encoded by either single-level or multilevel codes. The coded bits are first randomly interleaved and then entered into a signal mapper.
Xiao Ma 0001, Li Ping 0001
openaire   +1 more source

Adaptive coded modulation based on LDPC codes

2015 10th International Conference on Communications and Networking in China (ChinaCom), 2015
In order to resolve the problem of limited spectrum resources and low spectrum utilization rate, we adopted adaptive coded modulation technology based on LDPC codes. We used PEG method to construct the LDPC check matrix and B-P algorithm to decode. In addition, we used the adaptive algorithm based on reliability. We got the modulation and coding scheme
Bo Li 0034, Chang Ju, Hongjuan Yang, Gongliang Liu   +3 more
openaire   +1 more source

Coded modulation with convolutional codes over rings

1991
The objective of this work is to present a multilevel convolutional coding method based on rings of integers modulo-m (generally m is a power of 2) which is suitable for Coded Modulation schemes. This new method of coded modulation is proposed because of the similarities between an m-ary phase shift keying modulation and the structure of a ring of ...
Renato Baldini Filho, Patrick Guy Farrell   +1 more
openaire   +1 more source

Optimized Modulation and Coding for Dual Modulated QR Codes

IEEE Transactions on Image Processing, 2023
Irving Barron, Gaurav Sharma
exaly  

Modulation and coding for linear Gaussian channels

IEEE Transactions on Information Theory, 1998
G D Forney, G Ungerboeck
exaly  

Modulation codes

IEEE Transactions on Magnetics, 1997
null Yinyi Lin, null Pi-Hai Liu
openaire   +1 more source

Optimal adaptive modulation and coding with switching costs

IEEE Transactions on Communications, 2009
Vikram Krishnamurthy, Robert Schober
exaly