Supermode Transmission for MIMO-based Wireless Communications with Limited Feedback
نویسندگان
چکیده
In this paper, we propose a limited feedback transmission based on precoding mechanism for multiple-input multiple-output (MIMO) systems, referred as to supermode transmission. With a fixed data-rate, it allows different degree-of-freedom (DoF) depending on the current channel state information (CSI) and different transmission scheme with the same DoF. Through numerical examples, we show that the pairwise error probability (PEP)-based criterion outperforms the conventional criterion based on minimum eigenvalue (ME) of the received signal matrices, and the supermode transmission improves performance over both multimode MIMO (MM-MIMO) and multimode space-time block coding (MM-STBC), in particular, at low SNR regime.
منابع مشابه
Two-mode limited feedback block-fading adaptive transmission with minimum guaranteed rate in MIMO channel
This paper develops an adaptive scheme relying on a part-time availability of the channel state information and supplying the constant minimum rate achievable for an arbitrary fading realization. The two-mode transmission is investigated with the instantaneous perfect channel state information being known at the transmitter in the limited portion of time. We derived a general procedure for a su...
متن کاملVirtual Maximum Ratio Transmission for Downlink OFDMA Relay-based Networks
In this paper, a novel and practical transmission scheme for a Multiple Input Multiple Output–Orthogonal Frequency Division Multiple Access (MIMO-OFDMA) relaybased network is proposed and evaluated.We coin the termVirtual Maximum Ratio Transmission (VMRT) for the schemewhich obtains diversity and array gain at both links in a two-hop transmission, while keeping the complexity low. Besides, the ...
متن کاملAdaptive Video Transmission over Wireless MIMO System
There has been an interesting issue in multimedia communications over wireless system in recent years. In order to achieve high data rate wireless multimedia communications, spatial multiplexing technique (Foschini & Gans, 1998; Wolniansky et al. 1998) has recently developed as one of the most noteworthy techniques as multiple-input and multiple-output (MIMO) systems. If the channel state infor...
متن کاملEfficient Feedback Transmission for Multi-User MIMO Systems
Recently, a number of techniques have been introduced to improve sum-rate performance of a wireless multipleinput multiple-output (MIMO) broadcast channel (BC). However, previous works have ignored the rate overhead associated with feedback of MIMO BC channel state information (CSI), which increases in proportion to the number of users in multi-user MIMO communications. Considering the limited ...
متن کاملLimited Feedback Transceiver Design for Downlink MIMO OFDM Cellular Networks
Feedback in wireless communications is tied to a long-standing and successful history, facilitating robust and spectrally efficient transmission over the uncertain wireless medium. Since the application of multiple antennas at both ends of the communication link, enabling multiple-input multiple-output (MIMO) transmission, the importance of feedback information to achieve the highest performanc...
متن کامل