Mehta, Neelesh B. ; Molisch, Andreas F. ; Zhang, Jinyun ; Bala, Erdem (2007) Antenna Selection Training in MIMO-OFDM/OFDMA Cellular Systems In: 2007 2nd IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing, 12-14 December 2007, St. Thomas, VI, USA.
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Official URL: https://doi.org/10.1109/CAMSAP.2007.4497978
Related URL: http://dx.doi.org/10.1109/CAMSAP.2007.4497978
Abstract
Antenna selection allows multiple-antenna systems to achieve most of their promised diversity gain, while keeping the number of RF chains and, thus, cost/complexity low. In this paper we investigate antenna selection for fourth-generation OFDMA- based cellular communications systems, in particular, 3GPP LTE (long-term evolution) systems. We propose a training method for antenna selection that is especially suitable for OFDMA. By means of simulation, we evaluate the SNR-gain that can be achieved with our design. We find that the performance depends on the bandwidth assigned to each user, the scheduling method (round-robin or frequency-domain scheduling), and the Doppler spread. Furthermore, the signal-to-noise ratio of the training sequence plays a critical role. Typical SNR gains are around 2 dB, with larger values obtainable in certain circumstances.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Source: | Copyright of this article belongs to IEEE. |
| Keywords: | Signal to noise ratio; Radio frequency; Costs; Bandwidth; Frequency conversion; Hardware; Telephone sets; MIMO; Diversity methods; Context awareness. |
| ID Code: | 139039 |
| Deposited On: | 15 Sep 2025 09:56 |
| Last Modified: | 15 Sep 2025 09:56 |
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