OFDMA

(redirected from Orthogonal Frequency Division Multiple Access)

OFDMA

(Orthogonal Frequency Division Multiple Access) A cellular air interface based on OFDM for multiple, simultaneous users. The multiuser capability is achieved by assigning each user a subset of OFDM subcarriers (see OFDM). Used in communications networks such as WiMAX and LTE, OFDMA provides air interfaces that are superior to CDMA and TDMA. See SC-FDMA, WiMAX, LTE, CDMA and TDMA.
References in periodicals archive ?
OFDMA (orthogonal frequency division multiple access for more efficient channel use)
Utilizing an OFDMA (orthogonal frequency division multiple access) interface as opposed to CDMA (code division multiple access), WaterSignal Generation 7 can monitor water more efficiently with LTE.
Orthogonal frequency division multiple access (OFDMA) represents the natural extension of OFDM to support many simultaneous users.
The software supports key features of 802.11ax including narrower subcarrier spacing, 1024-QAM and multi-user orthogonal frequency division multiple access (OFDMA).
To develop and demonstrate in a real scenario the feasibility of the orthogonal frequency division multiple access technologies in satellite communication networks applicable to mobile or fixed satellite services.
Dual decomposition is used to decouple problem into power control and the multihop orthogonal frequency division multiple access scheduling in the transport layer and the MAC/PHY layer, which adjusts base cohort arrival rate.
Orthogonal frequency division multiple access (OFDMA) is a multi-user variant of OFDM where subcarriers can be allocated among multiple users of the channel.
[8] proposed a training sequence consisting of several groups of contiguous subcarriers in the frequency domain that are assigned to each transmitter, which is similar to downlink orthogonal frequency division multiple access (OFDMA).
Yang (electrical engineering, California State U.-Fullerton) offers a broad treatment of orthogonal frequency division multiplexing (OFDM) and orthogonal frequency division multiple access (OFDMA), which are becoming the de facto methods of transmission at the physical layer in broadband mobile systems.
Orthogonal frequency division multiple access (OFDMA) offers many advantages to LTE, notably the ability to deliver high data rates and perform well even in low quality channels.
All of the new chipsets support FDD LTE and TDD LTE modes and different carrier bandwidths, and are capable of using orthogonal frequency division multiple access (OFDMA) and multiple-input and multiple-output (MIMO) antenna technology to support peak data rates of up to 100 Mbps on the downlink and 50 Mbps on the uplink.
The Broad@ir system comprises both wireless base stations and compact customer terminals utilizing Broadstorm's patented, OFDMA (orthogonal frequency division multiple access) airlink technology called CelerFlex(TM).

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