A flexible radio transceiver for TVWS based on FBMC

Berg, Vincent; Doré, Jean‐Baptiste; Noguet, Dominique

doi:10.1016/j.micpro.2014.05.010

Cited by 25 publications

(15 citation statements)

References 15 publications

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“…Regarding FBMC and UFMC, there are few published works on hardware implementations for baseband modulators. Nadal et al [24] and Berg et al [25] presented FPGA-based implementations for polyphase network FBMC modulators. Alternatively, we showed that, despite its higher computational complexity, the Frequency Spreading (FS) approach is a convenient scheme for FPGA-based FBMC designs and proposed a flexible and resource-efficient variant of an FS-FBMC baseband modulator [26].…”

Section: Background and Related Workmentioning

confidence: 99%

An FPGA-Oriented Baseband Modulator Architecture for 4G/5G Communication Scenarios

Ferreira

2018

Electronics

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The next evolution in cellular communications will not only improve upon the performance of previous generations, but also represent an unparalleled expansion in the number of services and use cases. One of the foundations for this evolution is the design of highly flexible, versatile, and resource-/power-efficient hardware components. This paper proposes and evaluates an FPGA-oriented baseband processing architecture suitable for communication scenarios such as non-contiguous carrier aggregation, centralized Cloud Radio Access Network (C-RAN) processing, and 4G/5G waveform coexistence. Our system is upgradeable, resource-efficient, cost-effective, and provides support for three 5G waveform candidates. Exploring Dynamic Partial Reconfiguration (DPR), the proposed architecture expands the design space exploration beyond the available hardware resources on the Zynq xc7z020 through hardware virtualization. Additionally, Dynamic Frequency Scaling (DFS) allows for run-time adjustment of processing throughput and reduces power consumption up to 88%. The resource overhead for DPR and DFS is residual, and the reconfiguration latency is two orders of magnitude below the control plane latency requirements proposed for 5G communications.waveforms (FBMC, UFMC, GFDM) intermingled with a variety of 3G and 4G waveforms" [3]. In heavily used portions of the spectrum, such as the sub-6 GHz band, multi-waveform coexistence requires Dynamic Spectrum Access (DSA) and Carrier Aggregation (CA) techniques to achieve a more efficient spectrum utilization [1].Other important factors in 5G NR are cost minimization and energy efficiency. Cloud Radio Access Networks (C-RANs) attempt to achieve a more efficient energy consumption and resource allocation by deploying a central Baseband processing Unit (BBU) that serves multiple Remote Radio Heads (RRHs) [4]. This network architecture relies on reconfigurable hardware modules to implement BBUs supporting the different access technologies and modes of operation used by RRHs.The realization of the 5G vision will strongly rely on the design of hardware infrastructure adjusted to the challenges imposed by future wireless communications. Regarding digital baseband processing, hardware designs should be: (1)flexible to support multiple services requirements, waveforms, and numerologies; (2) evolvable/forward-compatible to be easily upgradeable with new functionalities and future modes of operation, thus extending the system's duty lifetime; (3) energy-efficient and (4) cost-effective. FPGAs are convenient platforms to design systems with these characteristics. Apart from their capacity for parallel intensive computation, FPGAs feature a high degree of flexibility not only at design time, but also at runtime, through Dynamic Partial Reconfiguration (DPR) [5]: the ability to reconfigure portions of FPGA logic fabric (reconfigurable regions) while the other portions remain unchanged and running. This increases the FPGA functional density, as mutually-exclusive circuits/functionalities are implemented o...

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Section: Background and Related Workmentioning

confidence: 99%

An FPGA-Oriented Baseband Modulator Architecture for 4G/5G Communication Scenarios

Ferreira

2018

Electronics

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“…We note that the reduction of the number of sub-carriers by a factor of 4 reduces the PAPR which presents another advantage for uplink communication and allows also to reduce the complexity of FFT implementation. More details about the FBMC modulation and the filter coefficients can be found in [2], whereas implementation issues are presented in [9].…”

Section: Fbmc and Phy Assumptionsmentioning

confidence: 99%

MAC Design for 5G Dense Networks Based on FBMC Modulation

Chall

Miscopein

Kténas

2018

Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering

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The fifth generation (5G) of wireless networks is currently under investigation in order to address the well-known challenges of the high capacity demands and traffic volume. The promising solutions to meet these targets can be achieved through ultra-densification, efficient use of spectrum and advanced filtered modulation techniques. In this paper, we present an enhanced MAC protocol for 5G small cells operating at 5 GHz and assuming an FBMC physical layer. The proposed MAC design consists of scheduled-based and contention-based access schemes and involves a listen before talk (LBT) procedure to comply with ETSI regulations. The performance of the proposed FBMC-MAC design is then evaluated in dense deployment scenarios under different PHY/MAC parameter settings. Moreover, we study the performance of FBMC-MAC systems in the context of coexistence with WiFi systems.

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“…This may include coexistence with GSM [9], digital terrestrial television white space (TVWS) [10], and machine-to-machine (M2M) transmissions [11], which are not covered in this article. Besides, it is important to highlight the numerous operational and functional similarities shared in the FBMC-PMR DL system coexistence, with key spectrum cohabitation cases targeting 5G paradigms.…”

Section: Scopementioning

confidence: 99%