The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Chunk-Based Resource Allocation in OFDMA Systems—Part II: Joint Chunk, Power and Bit Allocation
Abstract
By grouping a number of adjacent subcarriers into a chunk, resource allocation can be carried out chunk by chunk in orthogonal frequency division multiple access (OFDMA) systems. Chunk-based resource allocation is an effective approach to reduce the complexity of resource allocation in OFDMA systems. In this paper, a chunk-based resource allocation scheme, i.e. joint chunk, power and bit allocation, is proposed and analyzed by maximizing the throughput under a total transmit power constraint. A scaling factor is introduced to achieve optimal allocation. Considering the digital nature of bits per symbol per subcarrier (bits/symbol/subcarrier), a digitization process is proposed to digitize the theoretically allocated bits/symbol/subcarrier to integer. System parameters, such as the power constraint, number of users, coherence bandwidth, number of subcarriers and number of chunks, are introduced and their impacts on the average throughput are studied. The performance of the dynamic power allocation scheme is compared with the fixed power allocation scheme. The numerical results show that the theoretical throughput of the fixed power allocation scheme is quite close to that of the dynamic power allocation scheme. However, when the digital nature of bits/symbol/subcarrier is considered, the average throughput of the dynamic power allocation outperforms the fixed power allocation scheme.
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Boyd, S., & Vandenberghe, L. (2004) · doi:10.1017/cbo9780511804441 · Cited by 56,601
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A Deep Learning Framework for Optimization of MISO Downlink Beamforming
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“There are K = 4 single-antenna users and these users are distributed uniformly within the coverage of the BS. Note that none of these users is closer to the BS than 100 m. √ The channel of user k is modelled as where ˜ h k ∼ CN ( 0 , I N ) is the small-scale fading [60] and d k = 128 .”
BackgroundSelf-citationWu, Q., Zhao, Y., Fan, Q., Fan, P., Wang, J., & Zhang, C. (2023) · IEEE Journal of Selected Topics in Signal Processing · doi:10.1109/jstsp.2022.3221271 · Cited by 191
“Multiple vehicles in the VEC adopt the orthogonal frequency division multiplexing (OFDM) technique [30], [31] to communicate with the RSU, and thus the interference is not considered in the communication model.”
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Metadata
- Authors
- Zhu, H., & Wang, J.
- Venue
- IEEE Transactions on Communications
- Published
- 2012-02
- Volume
- 60
- Issue
- 2
- Pages
- 499-509
- ISSN
- 0090-6778 (ISSN-L)
- OpenAlex
- W2163068306
- Cited by
- 462
- References
- 1
- FWCI
- 33.42
- Type
- journal article
- Language
- en
- Open access
- closed
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- Zhu, H., & Wang, J. (2012). Chunk-Based Resource Allocation in OFDMA Systems—Part II: Joint Chunk, Power and Bit Allocation. IEEE Transactions on Communications. https://doi.org/10.1109/tcomm.2011.112811.110036
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