Results 1 to 10 of about 4,921,007 (278)
Capacity of Coded Index Modulation [PDF]
arXiv, 2015 We consider the special case of index coding over the Gaussian broadcast channel where each receiver has prior knowledge of a subset of messages at the transmitter and demands all the messages from the source. We propose a concatenated coding scheme for this problem, using an index code for the Gaussian channel as an inner code/modulation to exploit ...
Lakshmi Prasad Natarajan +2 more
arxiv +6 more sources
Quantum Speedup for Index Modulation [PDF]
IEEE Access, 2021 This paper presents a quantum-assisted index modulation for next-generation IoT wireless networks. The NP-hard index selection problem is first formulated by a quadratic unconstrained binary optimization (QUBO) problem consisting of constraints of ...
Naoki Ishikawa
semanticscholar +6 more sources
Precoder Index Modulation [PDF]
arXiv, 2014 Index modulation, where information bits are conveyed through antenna indices (spatial modulation) and subcarrier indices (subcarrier index modulation) in addition to information bits conveyed through conventional modulation symbols, is getting increased research attention.
Narasimhan, T. Lakshmi, Chockalingam, A.
arxiv +3 more sources
Index Modulation Techniques for Next-Generation Wireless Networks
IEEE Access, 2017 What is index modulation (IM)? This is an interesting question that we have started to hear more and more frequently over the past few years. The aim of this paper is to answer this question in a comprehensive manner by covering not only the basic ...
Ertugrul Basar +5 more
doaj +2 more sources
Index coded PSK modulation [PDF]
2016 IEEE Wireless Communications and Networking Conference, 2016 In this paper we consider noisy index coding problem over AWGN channel. We give an algorithm to map the index coded bits to appropriate sized PSK symbols such that for the given index code, in general, the receiver with large amount of side information will gain in probability of error performance compared to the ones with lesser amount, depending upon
Anjana A. Mahesh, B. Sundar Rajan
openalex +5 more sources
Multidimensional Index Modulation in Wireless Communications [PDF]
arXiv, 2017 In index modulation schemes, information bits are conveyed through indexing of transmission entities such as antennas, subcarriers, times slots, precoders, subarrays, and radio frequency (RF) mirrors. Index modulation schemes are attractive for their advantages such as good performance, high rates, and hardware simplicity.
Bharath Shamasundar +3 more
arxiv +6 more sources
Generalized Space and Frequency Index Modulation [PDF]
IEEE Transactions on Vehicular Technology, 2015 Unlike in conventional modulation where information bits are conveyed only through symbols from modulation alphabets defined in the complex plane (e.g., quadrature amplitude modulation (QAM), phase shift keying (PSK)), in index modulation (IM), additional information bits are conveyed through indices of certain transmit entities that get involved in ...
Datta, Tanumay +2 more
arxiv +7 more sources
Polar-Coded OFDM With Index Modulation
IEEE Access, 2021 In this paper, we apply polar codes to a modified version of OFDM systems with index modulation which is called OFDM with in-phase/quadrature index modulation (OFDM-I/Q-IM).
Si-Yu Zhang, Behnam Shahrrava
doaj +2 more sources
DCT-OFDM With Index Modulation [PDF]
IEEE Communications Letters, 2017 In this letter, index modulation (IM) is proposed for OFDM systems based on a discrete cosine transform (DCT) implementation. The new DCT-OFDM-IM scheme is shown to yield spectral efficiency improvements of up to 38% relative to OFDM-IM and up to 55% relative to OFDM while occupying the same bandwidth and maintaining similar robustness against the ...
Marwa Chafii +2 more
openalex +5 more sources
Index modulation for OFDM RadCom systems [PDF]
The Journal of Engineering, 2021 This paper studies a novel Radar and wireless communication fusion system namely, RadCom, using orthogonal frequency division multiplexing index modulation waveforms.
Gaojian Huang +3 more
semanticscholar +6 more sources