On the Energy Efficiency of Wireless Transceivers

Abstract

Abstract-Battery life-time is an important performance metric for many wireless networks and there is a growing need to improve the life-time of these networks. However, system analysis is complicated by the fact that the transceiver electronics energy cost is non-negligible and often has a major impact on the battery life. This paper develops a simple metric to evaluate the energy cost of both communication protocols and circuit electronics. This metric treats the electronics energy as an overhead cost on top of the EbINO requirement. This enables the joint optimization of system and circuit parameters for energy limited wireless transceivers with arbitrary communication protocols.

Impact of Transceiver Power Consumption on the Energy Efficiency of Zero-Forcing Detector in Massive MIMO Systems

“…(19) Note that varying the normalized PCPs can model scenarios where the power consumed by the various hardware components (e.g., RF receiver at the BS, UT transmitter circuitry, channel decoder at BS, baseband processors) changes due to technology scaling. Since all the normalized PCPs are proportional to the channel gain G c (see (15)), the effect of varying cell size can also be studied. We firstly show that, irrespective of the fixed value of (R, T, α), the optimal EE decreases with increasing (ρ r , ρ d , ρ s , ρ 0 ).…”

“…The average power consumed by each user's transmitter can be modeled as p tx = αp u + p t where α > 1 models the efficiency of the power amplifier 6 and p t is the power consumed by the other signal processing circuits inside the transmitter (e.g., oscillator, digital-to-analog converter, filters) [12], [13], [14], [15].…”

“…14 With B = 200 KHz, typical values for (pr, p d , ps) are in the range 0.01 − 1.0 W [15], and that for C 0 are less than a nano Joule [19].…”

Minimum Energy Per Bit by Power Model in the Wireless Transceiver System

“…또한 무선 송수신기의 에너지 효율을 나타내기 위한 방식으로, 통신 방식에 의한 전력 소모와 송수 신기의 전력 효율을 이용한 방식이 제안되었다 [7] . 스템의 전체적인 에너지 소모는 다음과 같이 정의 할 수 있다 [6] .…”

WSN Design for Unlimited Lifetime

“…If the transmission power is not dynamically adapted to the actual length of the wireless link (Wang & Sodini, 2006), the energy spent at node v to process a packet can be regarded as a property of the node (denoted by E(v)) independent of the outgoing edge of choice. In this case, which is typical of most real-world WSNs, the constraints imposed by Equations 2 and 3 can be suitably expressed as capacity constraints (denoted by cap(v)) applied to the packet flow across node v (denoted by F(v)).…”