Topic
Dirty paper coding
About: Dirty paper coding is a research topic. Over the lifetime, 814 publications have been published within this topic receiving 37097 citations.
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04 Dec 2022TL;DR: In this article , a finite blocklength (FBL) coding scheme is proposed for the dirty-tape channel with causal state interference at the trans-mitter, and an achievable rate for given blocklength and decoding error probability is obtained, and the results of this paper are further illustrated via numerical examples.
Abstract: In this paper, the dirty-tape channel (the white Gaussian channel with causal state interference at the trans-mitter) is revisited by considering a noisy feedback link between the transmitter and receiver. A finite blocklength (FBL) coding scheme is proposed for this model, which is based on the classical Schalkwijk-Kailath (SK) scheme and an existing lattice-based interference canceling scheme. Based on the proposed scheme, an achievable rate for given blocklength and decoding error probability is obtained, and the results of this paper are further illustrated via numerical examples.
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16 May 2022TL;DR: In this article , a simple dirty paper coding (DPC) scheme based on q-ary codes over integer rings was proposed, which primarily involves a linear subtraction in the integer ring, for precancellation of interference known at the transmitter.
Abstract: This paper presents a simple dirty paper coding (DPC) scheme based on q-ary codes over integer rings. The encoding primarily involves a linear subtraction in the integer ring, for pre-cancellation of interference known at the transmitter. The received signal sequence corrupted by the interference is then guaranteed to belong to the expanded codebook of the ring code. As such, iterative q-ary message passing algorithm over the expanded codebook is employed for decoding of linear DPC, yielding near-capacity performance at the medium-to-high SNR regime for bandwidth efficient communication. The complexity of the proposed linear DPC is almost identical to that of the conventional coding for AWGN channel, and the power penalty is shown to quickly vanish as q increases. We employ a generalize EXIT chart based technique to optimize the degree distributions of the components and the multipliers of the underlying doubly irregular repeat-accumulate ring codes. Numerical results demonstrate that the gaps to capacity limit of the interference-free AWGN channel are only 1.36, 0.91, 0.62 dB for spectral efficiency of 2.0, 2.5, 3.0 bits/symbol, respectively.
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04 Apr 2010TL;DR: It is shown that the best-effort users can achieve higher rates when the data streams of any user are not restricted to be decoded consecutively and when timesharing between different decoding orders is allowed.
Abstract: A heterogeneous multiple-input-multiple-output (MIMO) broadcast (BC) system is considered, with some of the users having target-rate requirements while other users are working with best-effort data rates. We assume the use of dirty paper coding, and we exploit the duality between the capacity regions of the multiple access and broadcast channels in order to optimally and jointly optimize the rates, powers and decoding order. We use the concept of stream achievable rate region (rather than user achievable rate region) and show that the best-effort users can achieve higher rates when the data streams of any user are not restricted to be decoded consecutively and when timesharing between different decoding orders is allowed. It is shown that the problem can be formulated as a convex optimization problem. We also propose an algorithm to obtain the time-sharing factors and decoding orders (corner points) required to achieve the optimal solution.
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23 Jul 2012TL;DR: The proposed QR dirty paper coding (QR-DPC) method, which is based on QR decomposition, with block diagonalization (BD) algorithm, successfully utilize the precoding technique to eliminate the annoying MAI in a multiuser uplink system.
Abstract: In this paper, a precoding OFDMA uplink technique is proposed for the upcoming 4G cellular system. Such as IEEE 802.16m and 3GPP LTE, both of them are 4G candidates. We especially tackle the common carrier frequency offset (CFO) problem which brings the inter carrier interference (ICI) and multiple access interference (MAI). The main idea of this paper is the proposed QR dirty paper coding (QR-DPC) method, which is based on QR decomposition. Assisted with block diagonalization (BD) algorithm, we successfully utilize the precoding technique to eliminate the annoying MAI in a multiuser uplink system. Thus, the combination of BD and QR-DPC can significantly increase the BER performance as compared to conventional DPC. Moreover, we can further enhance the performance of QR-DPC by using the famous Water Pouring algorithm. Simulation results confirm that the proposed system can provide excellent performance under the ICI, MAI, and multipath interference environment.
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TL;DR: A symbol-by-symbol precoding scheme is developed for M-PAM SS embedding to alleviate the impact of the interference which is explicitly known to embedder.
Abstract: We consider M-level pulse amplitude modulation (M-PAM) spread-spectrum (SS) data embedding in transform domain host data. The process of data embedding can be viewed as delivering information through the channel including additive interference from host that is known to the embedder. We first utilize the knowledge of second-order statistics of host to design optimal carrier that maximizes the signal-to-interference-plus-noise ratio at the decoder end. Then, inspired by Tomlinson---Harashima precoding used in communication systems, a symbol-by-symbol precoding scheme is developed for M-PAM SS embedding to alleviate the impact of the interference which is explicitly known to embedder. For any given embedding carrier and host data, we aim at designing precoding algorithm to minimize the receiver bit error rate (BER) with any given host distortion budget, and conversely minimize the distortion at any target BER. Experimental studies demonstrate that the proposed precoded SS embedding approach can significantly improve BER performance over conventional SS embedding schemes.