Results 31 to 40 of about 708 (167)

Information Guided Precoding for OFDM

IEEE Access, 2017
In conventional orthogonal frequency division multiplexing with index modulation (OFDM-IM), the M-ary modulated symbols are transmitted on a subset of subcarriers under the guidance of information bits. In this paper, a novel information guided precoding
Qiang Li, Miaowen Wen, H. Vincent Poor, Fangjiong Chen   +3 more
doaj   +1 more source

Design and Optimization of Hierarchical Demodulator and Decoder for Layered Coded OFDM-IM With NR-LDPC

IEEE Access
In this paper, we first propose a novel code rate optimized orthogonal frequency division multiplexing with index modulation (OFDM-IM) transceiver architecture based on new radio low-density parity-check (NR-LDPC) coding, referred to as Rate Optimization
Zijian Zeng, Huan Ma, Liang Lv
doaj   +1 more source

Enhanced Coordinate Interleaved OFDM With Index Modulation

IEEE Access, 2017
Orthogonal frequency-division multiplexing with index modulation (OFDM-IM) has attracted much attention in recent years. In OFDM-IM, the information bits of a block are generally divided into several subblocks, each of which is further split into two ...
Yun Liu, Fei Ji, Hua Yu, Fangjiong Chen, Dehuan Wan, Beixiong Zheng   +5 more
doaj   +1 more source

Subblocks Set Design Aided Orthogonal Frequency Division Multiplexing With All Index Modulation

IEEE Access, 2019
In recent years, OFDM with index modulation (OFDM-IM) has become a potential technique due to its improvement of diversity gain. In typical OFDM-IM schemes, incoming information bits are divided into two parts, symbols bits, and index bits.
Yuxin Shi, Xinjin Lu, Kai Gao, Jiang Zhu, Shilian Wang   +4 more
doaj   +1 more source

Optimal Mapper for OFDM With Index Modulation: A Spectro-Computational Analysis

IEEE Access, 2020
In this work, we present an optimal mapper for OFDM with index modulation (OFDM-IM). By optimal we mean the mapper achieves the lowest possible asymptotic computational complexity (CC) when the spectral efficiency (SE) gain over OFDM maximizes.
Saulo Queiroz, Joao P. Vilela, Edmundo Monteiro   +2 more
doaj   +1 more source

OFDM-IM for Joint Communication and Radar-Sensing: A Promising Waveform for Dual Functionality

Frontiers in Communications and Networks, 2021
The demand for dual-functional wireless systems is on the rise as certain resources become more congested and scarce. Joint communication-radar (JCR) is a promising technology that is becoming very critical and growing in popularity, where communication ...
Mehmet Mert Şahin, Ilter Erol Gurol, Emre Arslan, Ertugrul Basar, Huseyin Arslan, Huseyin Arslan   +5 more
doaj   +1 more source

Subband-adaptive turbo-coded OFDM-based interactive video telephony

, 2002
A range of adaptive orthogonal frequency division multiplex (AOFDM) video systems are proposed for interactive communications over wireless channels. The proposed constant target bit-rate subband adaptive OFDM modems can provide a lower bit error rate ...
Cherriman, P.J., Keller, T., Hanzo, L.
core   +1 more source

Index Modulation Assisted DCT-OFDM with Enhanced Transceiver Design [PDF]

, 2019
An index modulation (IM) assisted Discrete Cosine Transform based Orthogonal Frequency Division Multiplexing (DCT-OFDM) with Enhanced Transmitter Design (termed as EDCT-OFDM-IM) is proposed.
He, Chang, Lixia Xiao, Xiao, Pei, Chang He, Nikitopoulos, Konstantinos, Pei Xiao, Aijun Cao, Lei Zhang, Xiao, Lixia, Cao, Aijun, Zhang, Lei, Konstantinos Nikitopoulos   +11 more
core   +1 more source

Zero-Padded Orthogonal Frequency Division Multiplexing with Index Modulation Using Multiple Constellation Alphabets

IEEE Access, 2017
Orthogonal frequency-division multiplexing (OFDM) with index modulation has been emerged as a promising technique for next-generation networks, where the specific activation pattern of the OFDM subcarriers is capable of conveying additional information ...
Tianqi Mao, Qi Wang, Jinguo Quan, Zhaocheng Wang   +3 more
doaj   +1 more source

Adaptive redundant residue number system coded multicarrier modulation

, 2000
The novel class of nonbinary maximum minimum distance redundant residue number system (RRNS) codes is invoked in the context of adaptively RRNS coded, symbol-by-symbol adaptive multicarrier modulation, in order to combat the effects of frequency ...
Liew, T.H., Keller, T., Hanzo, L.
core   +1 more source