Green solutions for future LTE PMR networks

Masbernat, Xavier Pons; Gruet, Christophe; Fraysse, Frederic; Contal, Serge; Naviner, Lírida Alves de Barros

doi:10.1109/camad.2012.6335322

Cited by 6 publications

(1 citation statement)

References 18 publications

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“…Current PMR systems are still based on 2G networks [1]. In order to satisfy the user demands in the future, the PMR network has to evolve to the broadband solutions.…”

Section: Introductionmentioning

confidence: 99%

CDMA-OFDM combination method for enhancing capacity of voice over LTE Uplink in PMR context

Nguyen¹,

Nguyen²,

Georgeaux³

et al. 2015

2015 IEEE Wireless Communications and Networking Conference (WCNC)

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In this paper, we introduce a new Code Division Multiple Access (CDMA)-Orthogonal Frequency-Division Multiplexing (OFDM) combination method for Enhancing Capacity of Voice over LTE (VoLTE) Uplink in PMR context. In this method, voice payloads of different User Equipments (UEs) having the same Modulation and Coding Scheme (MCS) can be spread by different orthogonal codes and mapped to the same set of resource elements. The selection of spreading factor allows a maximum reduction of the difference between the LTE Uplink packet size and PMR voice payload. The proposed method allows reducing both data overhead and control overhead issues for VoLTE uplink in PMR context. The CDMA-OFDM combination method gives a significant increasing in capacity of VoLTE uplink over PMR context. In the best case, the proposed method can improve the voice capacity by the factor of 7 in comparison with the standard LTE.

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“…Current PMR systems are still based on 2G networks [1]. In order to satisfy the user demands in the future, the PMR network has to evolve to the broadband solutions.…”

Section: Introductionmentioning

confidence: 99%