A Pragmatic Adaptive Transmission Scheme with Low-Rate Feedback Using Two-Step Partial CQI for Multiuser OFDMA Systems
| Autor: | Younghoon Whang, Duho Rhee, Joong Hyung Kwon, Kwang Soon Kim |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Scheme (programming language)
Frequency-division multiple access Computer Networks and Communications Orthogonal frequency-division multiplexing Computer science Two step Real-time computing Transmission (telecommunications) Control theory Telecommunications link Electrical and Electronic Engineering computer Software computer.programming_language Degradation (telecommunications) |
| Zdroj: | IEICE Transactions on Communications. :405-407 |
| ISSN: | 1745-1345 0916-8516 |
| DOI: | 10.1093/ietcom/e90-b.2.405 |
| Popis: | In this paper, we investigate an efficient user selection and sub-band allocation algorithm in which each user transmits two-step partial CQI to reduce the amount of feedback in multi-user downlink OFDMA systems. Simulation results show that we can greatly reduce the feedback rate at the expense of negligible performance degradation compared to the full CQI feedback schemes or that we can greatly improve the performance with slightly reduced feedback rate compared to conventional partial CQI feedback schemes. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|