119 citations · 394 across the 34 of their papers we have counts for
9 papers · 2 filters
Bit-interleaved coded modulation in the wideband regime
Alfonso Martinez, Albert Guillen i Fabregas, Giuseppe Caire +1
The wideband regime of bit-interleaved coded modulation (BICM) in Gaussian channels is studied. The Taylor expansion of the coded modulation capacity for generic signal constellati…
Low-Density Parity-Check Codes for Nonergodic Block-Fading Channels
Joseph J. Boutros, Albert Guillen i Fabregas, Ezio Biglieri +1
We solve the problem of designing powerful low-density parity-check (LDPC) codes with iterative decoding for the block-fading channel. We first study the case of maximum-likelihood…
Derivative of BICM Mutual Information
Albert Guillen I Fabregas, Alfonso Martinez
In this letter we determine the derivative of the mutual information corresponding to bit-interleaved coded modulation systems. The derivative follows as a linear combination of mi…
A Tight Lower Bound to the Outage Probability of Discrete-Input Block-Fading Channels
Khoa D. Nguyen, Albert Guillen i Fabregas, Lars K. Rasmussen
In this correspondence, we propose a tight lower bound to the outage probability of discrete-input Nakagami-m block-fading channels. The approach permits an efficient method for nu…
Sphere Lower Bound for Rotated Lattice Constellations in Fading Channels
Albert Guillen i Fabregas, Emanuele Viterbo
We study the error probability performance of rotated lattice constellations in frequency-flat Nakagami- block-fading channels. In particular, we use the sphere lower bound on t…
Power Allocation for Discrete-Input Delay-Limited Fading Channels
Khoa D. Nguyen, Albert Guillen i Fabregas, Lars K. Rasmussen
We consider power allocation algorithms for fixed-rate transmission over Nakagami-m non-ergodic block-fading channels with perfect transmitter and receiver channel state informatio…
Multidimensional Coded Modulation in Block-Fading Channnels
Albert Guillen i Fabregas, Giuseppe Caire
We study the problem of constructing coded modulation schemes over multidimensional signal sets in Nakagami- block-fading channels. In particular, we consider the optimal divers…
Power Allocation for Discrete-Input Non-Ergodic Block-Fading Channels
Khoa D. Nguyen, Albert Guillen i Fabregas, Lars K. Rasmussen
We consider power allocation algorithms for fixed-rate transmission over Nakagami-m non-ergodic block-fading channels with perfect transmitter and receiver channel state informatio…
Optimal Throughput-Diversity-Delay Tradeoff in MIMO ARQ Block-Fading Channels
Allen Chuang, Albert Guillen i Fabregas, Lars K. Rasmussen +1
In this paper, we consider an automatic-repeat-request (ARQ) retransmission protocol signaling over a block-fading multiple-input, multiple-output (MIMO) channel. Unlike previous w…