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| Improved Scheduling Algorithms for Uplink Single Carrier FDMA System |
| Fang Liu, Yuan-an Liu |
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Abstract In this paper, two improved recursive maximum expansion scheduling
algorithms for LTE uplink SC-FDMA are proposed. The proposed
Improved Recursive Maximum Expansion (IRME) scheme can achieve
higher degree of freedom in Resource Block (RB) expansion by
allowing RB expansion within certain ranking threshold. Moreover, in
order to further increase the flexibility in resource allocation,
multiple surviving paths are introduced in proposed Improved
Tree-based Recursive Maximum Expansion (ITRME) scheme. The
simulation results show that the IRME and ITRME schemes outperform
the conventional Recursive Maximum Expansion (RME) scheme which only
expands the resource allocation on neighboring RBs with the highest
metrics in terms of spectral efficiency. Especially, the IRME
scheme can obtain a better trade-off between spectral efficiency and
computational complexity.
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