搜索结果: 1-12 共查到“信息科学与系统科学 Channels”相关记录12条 . 查询时间(0.127 秒)
Bounds and Capacity Theorems for Cognitive Interference Channels with State
Bounds and Capacity Theorems Cognitive Interference Channels State Information Theory
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2012/7/9
A class of cognitive interference channel with state is investigated, in which two transmitters (transmitters 1 and 2) communicate with two receivers (receivers 1 and 2) over an interference channel. ...
Performance Analysis of Decode-and-Forward Relaying in Gamma-Gamma Fading Channels
Performance Analysis Decode-and-Forward Gamma-Gamma Fading Channels Information Theory
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2012/5/24
Decode-and-forward (DF) cooperative communication based on free space optical (FSO) links is studied in this letter. We analyze performance of the DF protocol in the FSO links following the Gamma-Gamm...
Joint Power and Resource Allocation for Block-Fading Relay-Assisted Broadcast Channels
wireless networks relaying resource allocation multiuser diversity long-term-evolution
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2012/5/9
We provide the solution for optimizing the power and resource allocation over block-fading relay-assisted broadcast channels in order to maximize the long term average achievable rates region of the u...
On Dispersions of Discrete Memoryless Channels with Noncausal State Information at the Encoder
Dispersions of Discrete Memoryless Channels Noncausal State Information Encoder Information Theory
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2012/4/18
In this paper, we study the finite blocklength limits of state-dependent discrete memoryless channels where the discrete memoryless state is known noncausally at the encoder. For the point-to-point ca...
Square Root Law for Communication with Low Probability of Detection on AWGN Channels
Square Root Law Communication Low Probability Detection AWGN Channels
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2012/3/1
We present a square root limit on low probability of detection (LPD) communication over additive white Gaussian noise (AWGN) channels. Specifically, if a warden has an AWGN channel to the transmitter ...
Delay-limited Source and Channel Coding of Quasi-Stationary Sources over Block Fading Channels: Design and Scaling Laws
Outage capacity quasi-stationary source outage distortion source and channel coding
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2012/2/29
In this paper, delay-limited transmission of quasi-stationary sources over block fading channels are considered. Considering distortion outage probability as the performance measure, two source and ch...
Closed Form Secrecy Capacity of MIMO Wiretap Channels with Two Transmit Antennas
Secrecy capacity MIMO wiretap channel physical layer security
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2011/9/22
Abstract: A Gaussian multiple-input multiple-output (MIMO) wiretap channel model is considered. The input is a two-antenna transmitter, while the outputs are the legitimate receiver and an eavesdroppe...
Multilevel polarization for nonbinary codes and parallel channels
Polar codes nonbinary channels parallel channels
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2011/9/20
Abstract: We study polarization for nonbinary channels with input alphabet of size q=2^r,r=2,3,... Using Arikan's successive cancellation decoding, we prove that the virtual channels that arise in the...
Spatially-Coupled Codes and Threshold Saturation on Intersymbol-Interference Channels
Area theorem BP threshold EXIT curve GEXIT curve ISI channels LDPC codes MAP threshold
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2011/9/13
Abstract: Recently, it has been observed that terminated low-density-parity-check (LDPC) convolutional codes (or spatially-coupled codes) appear to approach capacity universally across the class of bi...
Nearest Neighbour Decoding with Pilot-Assisted Channel Estimation for Fading Multiple-Access Channels
Pilot-Assisted Channel Estimation Fading Multiple-Access Channels Information Theory
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2011/8/30
Abstract: We study a noncoherent multiple-input multiple-output (MIMO) fading multiple-access channel (MAC), where the transmitters and the receiver are aware of the statistics of the fading, but not ...
Multilevel Polarization of Polar Codes Over Arbitrary Discrete Memoryless Channels
Polar Codes Memoryless Channels Information Theory
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2011/8/30
Abstract: It is shown that the original construction of polar codes suffices to achieve the symmetric capacity of discrete memoryless channels with arbitrary input alphabet sizes. It is shown that in ...
Bounds on the capacity of OFDM underspread frequency selective fading channels
OFDM underspread frequency selective fading channels Information Theory
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2011/8/24
Abstract: The analysis of the channel capacity in the absence of prior channel knowledge (noncoherent channel) has gained increasing interest in recent years, but it is still unknown for the general c...