MODULATION

LoRa signal synchronization and detection at extremely low signal-to-noise ratios

In recent years, LoRa has been deployed in countless Internet of Things (IoT) applications across the globe. However, as LoRa is a proprietary technology, research into its physical-layer performance has been challenging. Implementing LoRa on …

LoRa signal synchronization and detection at extremely low signal-to-noise ratios

In recent years, LoRa has been deployed in countless Internet of Things (IoT) applications across the globe. However, as LoRa is a proprietary technology, research into its physical-layer performance has been challenging. Implementing LoRa on …

Characterizing the impact of Doppler effects on body-centric LoRa links with SDR

Long-range, low-power wireless technologies such as LoRa have been shown to exhibit excellent performance when applied in body-centric wireless applications. However, the robustness of LoRa technology to Doppler spread has recently been called into …

Performance analysis of pre-equalized multilevel partial response modulation for high-speed electrical interconnects

Accurate modeling of the predicted kESM-based link performance metric for BIC-OFDM systems

Effective SNR mapping (ESM) is a powerful technique for optimizing the performance of orthogonal frequency division multiplexing (OFDM) based wireless systems. ESM transforms a vector of subcarrier SNRs into a scalar effective SNR, which represents …

Iterative multiuser detection of spectrally efficient FDMA CPM

This paper presents two new iterative multiuser detection algorithms for spectrally efficient frequency division multiple access continuous phase modulation in additive white Gaussian noise. The detectors are derived from the sum-product algorithm …

Spectrally efficient CPM: suboptimal FG-based multiuser detection

This paper presents a new iterative multiuser (MU) detection algorithm for asynchronous spectrally-efficient continuous-phase modulation in additive white Gaussian noise. The proposed detector is derived from the sum-product (SP) algorithm and the …

A low-complexity iterative phase noise tracker for bit-interleaved coded CPM signals in AWGN

This paper considers iterative detection of bit-interleaved coded continuous phase modulation in the presence of both phase noise (PN) and additive white Gaussian noise (AWGN). The proposed receiver iterates between a detection module and an …

Analysis and efficient evaluation of the BER of OSTBCs with imperfect channel estimation in arbitrarily correlated fading channels

An analysis of the exact bit error rate (BER) performance of orthogonal space-time block codes (OSTBCs) with maximum-likelihood detection in the presence of channel estimation errors is presented. The possibly correlated coefficients of the …