In the literature, the bounds of the peak to average power ratio (PAPR) are generalized to both complex-valued and real-valued orthogonal frequency division multiplexing (OFDM) signals. In fact, these bounds are accurately bounding the PAPR distribution of complex-valued OFDM signals only. In this paper, we derive accurate PAPR bounds of real-valued OFDM signals and show that bounds of complex-...

An efficient and distortionless scheme for peak power reduction in Orthogonal Frequency Division Multiplexing (OFDM) is proposed, which introduces some additional complexity but nearly vanishing redundancy. The approach is very flexible and works with arbitrary numbers of subcarriers and without restriction on the type of modulation applied in them. The core of the approach is the coordination ...

In this paper we derive the optimal diversity versus multiplexing tradeoff for a frequency selective i.i.d. Rayleigh MIMO channel. This tradeoff is shown to be better than the one of the frequency flat MIMO channel. Traditional approaches for frequency selective channels use OFDM techniques in order to exploit the diversity gain due to frequency selectivity. We show that although coding in OFDM...

Microwave-based all-analogue (orthogonal) subcarrier multiplexing (SCM) permits a direct processing of baseband data at Gbit/s while achieving low power consumption, low latency, low cost, and tolerance to dispersion. A key figure of merit in any SCM link is the sensitivity in the receiver, which depends on the transmitter, the link and the receiver. By analysing the impact of the nonlinearitie...

A paradigm shift in optical communication networks is proposed, with the introduction of a new ecosystem devices and components capability transforming current point-to-point (with their entailed, limiting, electrical aggregation) into flexible, scalable cost-effective point-to-multipoint networks. In architecture, which better aligns hub-and-spoke traffic patterns observed today's metro access...

A novel intercarrier interference (ICI)-aware orthogonal frequency division multiplexing (OFDM) channel estimation network ICINet is presented for rapidly time-varying channels. consists of two components: a preprocessing deep neural subnetwork (PreDNN) and cascaded residual learning-based (CasResNet). By fully taking into account the impact ICI, proposed PreDNN first refines initial estimates ...

Multi-Input Multi-Output(MIMO) techniques can achieve higher throughput and improved reliability in wireless broadband communications by exploiting spatial diversity in multiple-antenna wireless communications. By combining the spatial diversity and spatial multiplexing we can fully exploit the MIMO channel capacity. BitInterleaved Coded Multiple Beamforming (BICMB) can achieve both spatial div...

It is foreseeable that the 100 Gb/s/ $\lambda$ and beyond passive optical network (PON) will be required in future access networks to meet explosive growth of data traffic. The coherent systems could a promising solution for 100G PON. C...

The 3rd Generation Partnership Project (3GPP) is currently specifying the system requirements for Long Term Evolution Advanced (LTE-A), having as a target peak data rates of 1 Gbit/s in local areas and 100 Mbit/s in wide areas. To meet these ambitious requirements for the uplink, multiple-input-multiple-output (MIMO) antenna techniques are expected to be deployed. In this paper, several channel...