Limits...
Design of simplified maximum-likelihood receivers for multiuser CPM systems.

Bing L, Bai B - ScientificWorldJournal (2014)

Bottom Line: The performance of the proposed receivers is analyzed and compared to some existing receivers.Some schemes are designed to implement the proposed receivers and to reveal the roles of different system parameters.Analysis and numerical results show that the proposed receivers can approach the optimum multiuser receivers with significantly (even exponentially in some cases) reduced complexity and marginal performance degradation.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of ISN, Xidian University, Xi'an 710071, China.

ABSTRACT
A class of simplified maximum-likelihood receivers designed for continuous phase modulation based multiuser systems is proposed. The presented receiver is built upon a front end employing mismatched filters and a maximum-likelihood detector defined in a low-dimensional signal space. The performance of the proposed receivers is analyzed and compared to some existing receivers. Some schemes are designed to implement the proposed receivers and to reveal the roles of different system parameters. Analysis and numerical results show that the proposed receivers can approach the optimum multiuser receivers with significantly (even exponentially in some cases) reduced complexity and marginal performance degradation.

No MeSH data available.


The minimum achievable distance d2 versus the modulation index h for suboptimum (LR < L) receivers. Δf = 0 and Δϕ is optimized.
© Copyright Policy - open-access
Related In: Results  -  Collection


getmorefigures.php?uid=PMC3927751&req=5

fig3: The minimum achievable distance d2 versus the modulation index h for suboptimum (LR < L) receivers. Δf = 0 and Δϕ is optimized.

Mentions: The proposed suboptimum receivers based on 1REC are considered in Figure 3 with optimized Δϕ and Δf = 0. This frequency response was particularly suited for single user binary 2RC systems [14]. The performances of the suboptimum and the optimum receivers are compared. It is seen that these suboptimum receivers have a performance loss no more than 1 dB. However, due to the severe degradation caused by the dimension reduction observed in single user systems, this technique is not adopted in these multiuser receivers.


Design of simplified maximum-likelihood receivers for multiuser CPM systems.

Bing L, Bai B - ScientificWorldJournal (2014)

The minimum achievable distance d2 versus the modulation index h for suboptimum (LR < L) receivers. Δf = 0 and Δϕ is optimized.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3927751&req=5

fig3: The minimum achievable distance d2 versus the modulation index h for suboptimum (LR < L) receivers. Δf = 0 and Δϕ is optimized.
Mentions: The proposed suboptimum receivers based on 1REC are considered in Figure 3 with optimized Δϕ and Δf = 0. This frequency response was particularly suited for single user binary 2RC systems [14]. The performances of the suboptimum and the optimum receivers are compared. It is seen that these suboptimum receivers have a performance loss no more than 1 dB. However, due to the severe degradation caused by the dimension reduction observed in single user systems, this technique is not adopted in these multiuser receivers.

Bottom Line: The performance of the proposed receivers is analyzed and compared to some existing receivers.Some schemes are designed to implement the proposed receivers and to reveal the roles of different system parameters.Analysis and numerical results show that the proposed receivers can approach the optimum multiuser receivers with significantly (even exponentially in some cases) reduced complexity and marginal performance degradation.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of ISN, Xidian University, Xi'an 710071, China.

ABSTRACT
A class of simplified maximum-likelihood receivers designed for continuous phase modulation based multiuser systems is proposed. The presented receiver is built upon a front end employing mismatched filters and a maximum-likelihood detector defined in a low-dimensional signal space. The performance of the proposed receivers is analyzed and compared to some existing receivers. Some schemes are designed to implement the proposed receivers and to reveal the roles of different system parameters. Analysis and numerical results show that the proposed receivers can approach the optimum multiuser receivers with significantly (even exponentially in some cases) reduced complexity and marginal performance degradation.

No MeSH data available.