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Design of simplified maximum-likelihood receivers for multiuser CPM systems
1State Key Laboratory of ISN, Xidian University, Xi'an 710071, China.
Thescientificworldjournal
|June 24, 2014
Summary
Simplified maximum-likelihood receivers for multiuser systems offer near-optimum performance with drastically reduced complexity. These advanced receivers utilize mismatched filters and low-dimensional signal spaces for efficient continuous phase modulation signal processing.
Area of Science:
- Electrical Engineering
- Signal Processing
- Telecommunications
Background:
- Multiuser systems with continuous phase modulation (CPM) face challenges in receiver complexity and performance.
- Existing receivers often struggle to balance efficiency and accuracy in complex signal environments.
Purpose of the Study:
- To propose a novel class of simplified maximum-likelihood receivers for CPM-based multiuser systems.
- To analyze and compare the performance of these new receivers against existing solutions.
- To demonstrate implementation schemes and parameter roles for practical application.
Main Methods:
- Development of a receiver front end utilizing mismatched filters.
- Implementation of a maximum-likelihood detector within a reduced-dimensional signal space.
- Performance analysis through theoretical evaluation and numerical simulations.
Main Results:
- The proposed receivers achieve performance close to optimal multiuser receivers.
- Significant reductions in computational complexity are demonstrated, potentially exponential in some cases.
- Only marginal performance degradation is observed compared to complexity savings.
Conclusions:
- The proposed simplified maximum-likelihood receivers offer a highly efficient alternative for CPM multiuser systems.
- These receivers provide a practical approach to achieving high performance with reduced complexity.
- The findings suggest a new direction for designing advanced communication receivers.
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