Space-Time Coding with Transmit Antennas for Multiple Access Regardless of Frequency-Selective Multipath
نویسندگان
چکیده
In this paper we design space-time multiuser transceivers suitable for coping with frequency-selective multipath channels (downlink or uplink). Relying on symbol blocking, space-time codes are derived in the frequency-domain and MUI is eliminated without destroying the orthogonality of space-time block codes. The system is shown capable of providing transmit diversity while guaranteeing symbol recovery in multiuser environments regardless of the unknown multipath. In addition to decoding simplicity, analytic evaluation and corroborating simulations reveal the flexibility and performance merits of our designs.
منابع مشابه
Turbo coded HSDPA systems with transmit diversity over frequency selective fading channels
Transmit diversity is one of the key contributions to the 3G (third generation) WCDMA (wide-band code division multiple access) systems to accommodate high data-rate applications, where spatial diversity is introduced into the signal by transmitting through multiple antennas. While turbo codes are well understood to be able to provide powerful error correction ability in a SISO (single input si...
متن کاملChannel estimation and interference suppression for space-time coded systems in frequency-selective fading channels
It is of great interest to provide high data rate services in wireless communication systems. In order to support such services, it is desirable to extend space-time (ST) coding, originally proposed for known, frequency-nonselective fading channels, to unknown, multipath channels. In this paper, we consider the problem of interference suppression for wireless TDMA (time division multiple access...
متن کاملSpace-time block-coded multiple access through frequency-selective fading channels
Mitigation of multipath fading effects and suppression of multiuser interference (MUI) constitute major challenges in the design of wide-band third-generation wireless mobile systems. Space–time (ST) coding offers an effective transmit-antenna diversity technique to combat fading, but most existing ST coding schemes assume flat fading channels that may not be valid for wide-band communications....
متن کاملTransmit diversity and linear and decision-feedback equalizations for frequency-selective fading channels
Rapid growth and increasing demands for near-ubiquitous high-quality high-data-rate services present the most challenges for wireless system design. As an effective method to provide such services, space-time (ST) coding is gaining more and more attention. This paper extends ST coding, originally designed for known frequency-nonselective fading channels, to unknown frequency-selective channels....
متن کاملSingle-Carrier Frequency-Domain Equalization for Orthogonal STBC over Frequency-Selective MIMO-PLC channels
In this paper we propose a new space diversity scheme for broadband PLC systems using orthogonal space-time block coding (OSTBC) transmission combined with single-carrier frequency-domain equalization (SC-FDE). To apply this diversity technique to PLC channels, we first propose a new technique for combining SC-FDE with OSTBCs applicable to all dispersive multipath channels impaired by impulsive...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2000