Robustness of MIMO-OFDM Schemes for Future Digital TV to Carrier Frequency Offset

TL;DR

This paper examines how carrier frequency offset affects various high-efficiency MIMO-OFDM schemes for future digital TV, revealing significant sensitivity beyond 1% offset and highlighting the Alamouti scheme's particular vulnerability.

Contribution

It provides a comparative analysis of MIMO-OFDM schemes' robustness to CFO, emphasizing the sensitivity thresholds and identifying the most vulnerable scheme.

Findings

All studied schemes are sensitive to CFO > 1% of inter-carrier spacing.

Alamouti scheme is the most sensitive to CFO among the schemes.

Performance degradation occurs when CFO exceeds 1% of inter-carrier spacing.

Abstract

This paper investigates the impact of carrier frequency offset (CFO) on the performance of different MIMO-OFDM schemes with high spectral efficiency for next generation of terrestrial digital TV. We show that all studied MIMO-OFDM schemes are sensitive to CFO when it is greater than 1% of inter-carrier spacing. We show also that the Alamouti scheme is the most sensitive MIMO scheme to CFO