FOCS '02 Proceedings of the 43rd Symposium on Foundations of Computer Science
Fundamentals of wireless communication
Fundamentals of wireless communication
IEEE/ACM Transactions on Networking (TON) - Special issue on networking and information theory
Fountain codes over fading relay channels
IEEE Transactions on Wireless Communications
Cooperation in the MAC channel using frequency division multiplexing
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 2
Signal combining for relay transmission with rateless codes
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 1
Modern Coding Theory
Coding Schemes for User Cooperation in Low-Power Regimes
IEEE Transactions on Signal Processing
On energy efficiency and optimum resource allocation of relay transmissions in the low-power regime
IEEE Transactions on Wireless Communications
Rateless Coding for Wireless Relay Channels
IEEE Transactions on Wireless Communications
Design of capacity-approaching irregular low-density parity-check codes
IEEE Transactions on Information Theory
Spectral efficiency in the wideband regime
IEEE Transactions on Information Theory
Multiple-antenna capacity in the low-power regime
IEEE Transactions on Information Theory
Suboptimality of TDMA in the low-power regime
IEEE Transactions on Information Theory
Cooperative diversity in wireless networks: Efficient protocols and outage behavior
IEEE Transactions on Information Theory
On the capacity of MIMO relay channels
IEEE Transactions on Information Theory
Outage capacities and optimal power allocation for fading multiple-access channels
IEEE Transactions on Information Theory
Capacity bounds and power allocation for wireless relay channels
IEEE Transactions on Information Theory
Space-time diversity enhancements using collaborative communications
IEEE Transactions on Information Theory
Cooperative Strategies and Capacity Theorems for Relay Networks
IEEE Transactions on Information Theory
Bounds on capacity and minimum energy-per-bit for AWGN relay channels
IEEE Transactions on Information Theory
Raptor codes on binary memoryless symmetric channels
IEEE Transactions on Information Theory
Outage Capacity of the Fading Relay Channel in the Low-SNR Regime
IEEE Transactions on Information Theory
On Outage Capacity in the Low Power Regime
IEEE Transactions on Information Theory
| Hi-index | 35.69 |
In this paper, we consider cooperation in the low power (low SNR) regime for the multiple access channel with the assumption that the transmitters have no channel state information. A relevant performance measure to consider is therefore the outage capacity. We develop cooperation methods based on multiplexed coding in conjunction with rateless codes and find the achievable rates and in particular the minimum energy per bit required to achieve a certain outage probability. We consider two modes of operation: full duplex [code-division multiple access (CDMA)], where nodes can transmit and receive simultaneously on the same frequency hand, and half duplex [frequency-division multiple access (FDMA)], where the nodes transmit and listen on different frequency bands. We show that, perhaps surprisingly, there is little loss in performance when using FDMA. Furthermore, our results show that multiplexed rateless codes come within 0.1 dB of the outer bound on capacity. We also develop practical rateless coding methods for FDMA using multiplexed Raptor codes which operate within 0.52 and 1.1 dB of the theoretical limit for the two- and four-user case, respectively.