Orthogonal Frequency Division Multiplexing (OFDM) is a well-known modulation technique for transmission of large amount of digital data with high data rate in both wired and wireless communication systems. High peak-to-average power ratio (PAPR) is the main problem of OFDM system which can be improved by using single carrier frequency division multiple access (SC-FDMA) technique. A new scheme u...

The capacity of mobile protocols such as FDMA (Frequency Division Multiple Access), TDMA (Time Division Multiple Access), and CDMA (Code Division Multiple Access) systems are compared assuming perfect power control and the results are compared with the previous results. Methods of calculating the traffic capacity of such systems are discussed. CDMA can provide up-to 20 times more traffic capaci...

This paper proposes a novel multiple access scheme, which is a combination of Inhibit Sense Multiple Access (ISMA) and Frequency Division Multiple Access (FDMA). Two types of the proposed protocol are considered. They are based on FDD and TDD modes. The performance of each hybrid protocol is evaluated in terms of throughput and the comparison of the proposed schemes and the pure ISMA scheme is ...

Single-carrier space frequency block coding (SC-SFBC) is an innovative mapping scheme suitable for implementing transmit diversity in single-carrier frequency division multiple access (SC-FDMA) systems. The main advantage of SC-SFBC is that it preserves the low envelope variations of SC-FDMA, which is particularly interesting for the uplink of wireless communications systems. In this article, w...

There is considerable interest in the use of Single Carrier Frequency Division Multiple Access (SC-FDMA) as the uplink transmission scheme in the 3GPP Long Term Evolution standard. In this paper a pre-DFT time-domain implementation of Tomlinson-Harashima Precoding (THP) for uplink SC-FDMA is proposed. We demonstrate how precoding the uplink transmission is an alternative signal processing techn...

Single carrier frequency division multiple access (SC-FDMA) is the access technique which is used in the long term evolution (LTE) uplink in order to reduce the peak-to-average power ratio (PAPR). The LTE uplink uses this technique in joint application with turbo coding and high order modulations to achieve peak data rates up to 86 Mbps within 20 MHz bandwidth. This paper introduces a semi anal...

The primary objective of this paper is to apply the CHATUE algorithm, presented in the Part-1 paper of this article, to multi-user Single Carrier Frequency Division Multiple Access (SC-FDMA) Systems. The CHATUE algorithm connects turbo equalizers neighboring in time in the absence of Cyclic Prefix or Guard Interval, where the latest version of the reduced complexity equalization technique, Freq...

Single-carrier frequency-division multiple access (SC-FDMA) system suffers performance degradation when the length of the cyclic prefix (CP) is less than the channel delay spread. In this paper, based on MMSE criterion, we proposed an efficient frequency domain soft-decision feedback equalization (FDSDFE) scheme for SC-FDMA system. The proposed scheme employs residual inter-symbols cancellation...

Abstract An assessment of standalone GLONASS RTK performance is provided using its FDMA and CDMA signals. The new integer-estimable model (Teunissen 2019), which guarantees the integer-estimability ambiguities, employed. We introduce combined FDMA+CDMA compare strength against for instantaneous integer ambiguity resolution positioning. Various combinations signals are considered including L1, L...