A novel approach for random interleavers in IDMA system
ICCOM'07 Proceedings of the 11th Conference on 11th WSEAS International Conference on Communications - Volume 11
Equal power allocation of IDMA systems: feasibility, optimality, and throughput
IEEE Transactions on Wireless Communications
Rate optimization for IDMA systems with iterative joint multi-user decoding
IEEE Transactions on Wireless Communications
Superposition coded modulation with peak-power limitation
IEEE Transactions on Information Theory
Rate optimization for IDMA systems with iterative multi-user decoding
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
IMSAA'09 Proceedings of the 3rd IEEE international conference on Internet multimedia services architecture and applications
Iterative soft compensation for OFDM systems with clipping and superposition coded modulation
IEEE Transactions on Communications
Full length article: Performance analysis of superposition coded modulation
Physical Communication
International Journal of Interdisciplinary Telecommunications and Networking
Hi-index | 0.13 |
In this paper, we present an unequal power allocation technique to increase the throughput of code-division multiple-access (CDMA) systems with chip-level interleavers. Performance is optimized, respectively, based on received and transmitted power allocation. Linear programming and power matching techniques are developed to provide solutions to systems with a very large number of users. Various numerical results are provided to demonstrate the efficiency of the proposed techniques and to examine the impact of system parameters, such as iteration number and interleaver length. We also show that with some very simple forward error correction codes, such as repetition codes or convolutional codes, the proposed scheme can achieve throughput reasonably close to that predicted by theoretical limit in multiple access channels.