A selective control information detection scheme for OFDM receivers

Abstract

In wireless communications, both control information and payload (user-data) are concurrently transmitted and required to be successfully recovered. This paper focuses on block-level detection, which is applicable for detecting transmitted control information, particularly when this information is selected or chosen from a finite set of information that are known at both transmitting and receiving devices. Using an orthogonal frequency division multiplexing architecture, this paper investigates and evaluates the performance of a time-domain decision criterion in comparison with a form of Maximum Likelihood (ML) estimation method. Unlike the ML method, the proposed time-domain detection technique requires no channel estimation as it uses the correlation (in the time-domain) that exists between the received and the transmitted selective information as a means of detection. In comparison with the ML method, results show that the proposed method offers improved detection performance, particularly when the control information consists of at least 16. However, the implementation of the proposed method requires a slightly increased number of mathematical computations.

Performance Analysis of Low Power Interference Cancellation Architecture for OFDM System

“…The proposed architecture achieves low power with a minimum bit error rate.it also reduces the signal-to-signal beat interference effectively. Adegbite et al [12] and Myllyla et al [13] have proposed a time-domain detection method for block-level detection. The proposed method only uses the correlation of data to detect an error in transmitted and received information.…”

Selective Control Information Detection in 5G Frame Transmissions

“…Thus, the transmitted SCI sequence is uniquely identified by the index u given that C is deterministic and known. Hence, a block-level detection is performed at the receiver in order to determine an estimate of u, from which the type of modulation or any other form of control information is automatically determined [9]. It is important to note that a block-level detection procedure used for the recovery of control information is entirely different from the usual subcarrier-level or one-tap equalisation associated with the recovery of payload user data [5].…”