Joint adaptive modulation and power allocation for variable-rate space-time block codes
- Title
- Joint adaptive modulation and power allocation for variable-rate space-time block codes
- Author
- 김동우
- Keywords
- space-time block code (STBC); variable-rate STBC; adaptive modulation; power allocation
- Issue Date
- 2008-01
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Citation
- IEEE COMMUNICATIONS LETTERS, v. 12, No. 1, Page. 26-28
- Abstract
- Variable-rate space-time block codes (vr-STBCs) without any feedback can support different transmission rates and unequal error protection (UEP) which are needed for multimedia communications. Assuming necessary feedback, in this letter, we introduce a joint adaptive modulation and power allocation (AMP) for vr-STBCs so as to maximize the total throughput under constraints of transmit power limit and error requirements. Based on a Lagrangian multiplier method, optimum modulation orders and power levels are provided for the transmitter. Numerical results show that the proposed AMP enhances the throughput of existing vr-STBCs up to 20% with very limited feedback, e.g., at most 3-5 bits feedback.
- URI
- https://ieeexplore.ieee.org/document/4432323https://repository.hanyang.ac.kr/handle/20.500.11754/76677
- ISSN
- 1089-7798
- DOI
- 10.1109/LCOMM.2008.071478
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ELECTRICAL ENGINEERING(전자공학부) > Articles
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