| Pub. Date | : Oct, 2021 |
|---|---|
| Product Name | : The IUP Journal of Electrical and Electronics Engineering |
| Product Type | : Article |
| Product Code | : IJEEE21021 |
| Author Name | : Pushpavathi K P* and B Kanmani |
| Availability | : YES |
| Subject/Domain | : Engineering |
| Download Format | : PDF Format |
| No. of Pages | : 9 |
Long-Term Evolution-Advanced (LTE-A) technology was rolled out to meet the increase in the demand for data. The key mechanism of LTE-A, carrier aggregation provides wide bandwidth to meet this increased data requirement. Most of the smartphones support carrier aggregation to offer wide bandwidth. The hardware requirements of these digital systems are also modified to meet the specifications like small area, less power consumption, small size, etc. Digital filters form the core component in these digital systems. The paper applies the design of the Finite Impulse Response (FIR) digital filters to the devices that support carrier aggregation.
Carrier aggregation is one of the important mechanisms of the Long-Term Evolution-Advanced (LTE-A) systems. The component carriers of same or different bandwidth are aggregated to provide larger bandwidth to satisfy the increased data rate (Rappepat et al., 2010; Rahat and Asad, 2012; and Jan et al., 2013). The component carriers may be from the same frequency band or from different frequency bands. The aggregated bandwidth may be as wide as up to 100 MHz by aggregating about maximum of five different carriers of about 20 MHz each to provide a data rate of 1 Gbps (Alastair, 2012; Suresh et al., 2016; and Pushpavathi and Kanmani, 2020). It consists of subbands with the center frequency of carriers being separated by 300 kHz or it multiples along with the guard band (Rappepat et al., 2010; and Ibraheem et al., 2012). As an improvement of the LTE (or 4G), LTE-A is a multicarrier system. Multi-Carrier Modulation (MCM) is used as an alternate choice for the Orthogonal Frequency Division Multiplexing (OFDM) of LTE systems to meet the requirements (Lei et al., 2020).
Digital filters, Finite Impulse Response (FIR) filters, Infinite Impulse Response (IIR) filters, Wavelets, Carrier aggregation, Long-Term Evolution-Advanced (LTE-A), Narrow transition band filters