Abstract
A key assumption in all orthogonal space-time block coding (O-STBC) schemes is that the channel remains static over the length of the codeword. However, time selective fading channels do exist, and in such case the conventional O-STBC receiver will not function properly: even a relatively small variation in channel state can result in a large error floor. This paper presents an effective solution to this issue for the case of four transmit antennas. At the receiver, a simple zero forcing decoder is derived. To improve the performance of the decoder under certain channel conditions, the original O-STBC encoder is also modified accordingly. Computer simulations confirmed the effectiveness of the new procedure.
Original language | English |
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Pages | 128-132 |
Number of pages | 5 |
Publication status | Published - 2003 |
Event | IEEE Global Telecommunications Conference GLOBECOM'03 - San Francisco, CA, United States Duration: 1 Dec 2003 → 5 Dec 2003 |
Conference
Conference | IEEE Global Telecommunications Conference GLOBECOM'03 |
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Country/Territory | United States |
City | San Francisco, CA |
Period | 1/12/03 → 5/12/03 |