Power analysis of LTE system for uplink scenario

Abstract

There is a constant need to minimize power consumption at user equipment (UE) of wireless communication devices. In this paper we carry out the total power consumed at the handset for Long Term Evolution (LTE) systems. In uplink transmission, Single Carrier-Frequency Division Multiple Access (SC-FDMA) has been adopted as a transmission technology by 3GPP community people instead of Orthogonal Frequency Division Multiple Access (OFDMA) used for downlink transmission technology. SC-FDMA is categorized into Localized FDMA (LFDMA) and Interleaved FDMA (IFDMA). Here, we present the power analysis of LTE system for uplink scenario. We have taken three power components namely radio, circuit and computation power. The total power consumption has been compared between IFDMA and LFDMA transmission technology at a fixed bit error rate (BER) of 10 −5 . We have studied the effect of varying the number of Resource Blocks (RBs) on the total power consumed. We demonstrate through our simulation that at smaller number of RBs (16, 32) LFDMA performances is better as compared to IFDMA in terms of total power consumption.

Entropy based image segmentation with wavelet compression for energy efficient LTE systems

“…The LTE block is divided into sub-blocks which are shown in Fig. 1 and explained in [18]. Each user is assigned uplink transmission rate, R, depends on the number of subcarrier allocated to a user, N sc , the bits per symbol, b, the symbols per subframe, N sy , the transmission time interval of a subframe, T T I, and the overhead, O h , which includes control signals, reference signal, sync signal and some coding also.…”

“…P t depends on γ b the received signal to noise ratio, γ b intern depends on P b . P t can be obtained depending on the received SNR, γ b , as [18] …”