42 citations · 114 across the 14 of their papers we have counts for
14 papers
Using Dynamic Allocation of Write Voltage to Extend Flash Memory Lifetime
Haobo Wang, Nathan Wong, Tsung-Yi Chen +1
The read channel of a Flash memory cell degrades after repetitive program and erase (P/E) operations. This degradation is often modeled as a function of the number of P/E cycles. I…
Capacity of Gaussian Many-Access Channels
Xu Chen, Tsung-Yi Chen, Dongning Guo
Classical multiuser information theory studies the fundamental limits of models with a fixed (often small) number of users as the coding blocklength goes to infinity. This work pro…
Histogram-Based Flash Channel Estimation
Haobo Wang, Tsung-Yi Chen, Richard D. Wesel
Current generation Flash devices experience significant read-channel degradation from damage to the oxide layer during program and erase operations. Information about the read-chan…
Variable-length Convolutional Coding for Short Blocklengths with Decision Feedback
Adam R. Williamson, Tsung-Yi Chen, Richard D. Wesel
This paper presents a variable-length decision-feedback scheme that uses tail-biting convolutional codes and the tail-biting Reliability-Output Viterbi Algoritm (ROVA). Comparing w…
Many-Broadcast Channels: Definition and Capacity in the Degraded Case
Tsung-Yi Chen, Xu Chen, Dongning Guo
Classical multiuser information theory studies the fundamental limits of models with a fixed (often small) number of users as the coding blocklength goes to infinity. Motivated by…
Increasing Flash Memory Lifetime by Dynamic Voltage Allocation for Constant Mutual Information
Tsung-Yi Chen, Adam R. Williamson, Richard D. Wesel
The read channel in Flash memory systems degrades over time because the Fowler-Nordheim tunneling used to apply charge to the floating gate eventually compromises the integrity of…
Protograph-Based Raptor-Like LDPC Codes
Tsung-Yi Chen, Kasra Vakilinia, Dariush Divsalar +1
This paper proposes a class of rate-compatible LDPC codes, called protograph-based Raptor-like (PBRL) codes. The construction is focused on binary codes for BI-AWGN channels. As wi…
Feedback Communication Systems with Limitations on Incremental Redundancy
Tsung-Yi Chen, Adam R. Williamson, Nambi Seshadri +1
This paper explores feedback systems using incremental redundancy (IR) with noiseless transmitter confirmation (NTC). For IR-NTC systems based on {\em finite-length} codes (with bl…
Enhanced Precision Through Multiple Reads for LDPC Decoding in Flash Memories
Jiadong Wang, Kasra Vakilinia, Tsung-Yi Chen +5
Multiple reads of the same Flash memory cell with distinct word-line voltages provide enhanced precision for LDPC decoding. In this paper, the word-line voltages are optimized by m…
Reliability-based Error Detection for Feedback Communication with Low Latency
Adam R. Williamson, Tsung-Yi Chen, Richard D. Wesel
This paper presents a reliability-based decoding scheme for variable-length coding with feedback and demonstrates via simulation that it can achieve higher rates than Polyanskiy et…
Variable-Length Coding with Feedback: Finite-Length Codewords and Periodic Decoding
Tsung-Yi Chen, Adam R. Williamson, Richard D. Wesel
Theoretical analysis has long indicated that feedback improves the error exponent but not the capacity of single-user memoryless channels. Recently Polyanskiy et al. studied the be…
Chernoff Bounds for Analysis of Rate-Compatible Sphere-Packing with Numerous Transmissions
Tsung-Yi Chen, Dariush Divsalar, Richard D. Wesel
Recent results by Chen et al. and Polyanskiy et al. explore using feedback to approach capacity with short blocklengths. This paper explores Chernoff bounding techniques to extend…
A Rate-Compatible Sphere-Packing Analysis of Feedback Coding with Limited Retransmissions
Adam R. Williamson, Tsung-Yi Chen, Richard D. Wesel
Recent work by Polyanskiy et al. and Chen et al. has excited new interest in using feedback to approach capacity with low latency. Polyanskiy showed that feedback identifying the f…
Designing Nonlinear Turbo Codes with a Target Ones Density
Jiadong Wang, Thomas Courtade, Tsung-Yi Chen +2
Certain binary asymmetric channels, such as Z-channels in which one of the two crossover probabilities is zero, demand optimal ones densities different from 50%. Some broadcast cha…