Penetration Loss of Walls and Data Rate of IEEE802.16m WiMAX
Hala BahyEldeen Nafea,
Fayez W. Zaki,
Hossam E. S. Moustafa
Issue:
Volume 2, Issue 1, January 2014
Pages:
1-10
Received:
5 November 2013
Published:
20 December 2013
Abstract: In this paper, the data rate for the downlink (DL) of OFDMA-based IEEE802.16m WiMAX system and the available DL throughput as a function of distance to the Base Station (BS) are estimated for a number of propagation scenarios (OUTDOOR; INDOOR 1, INDOOR 2 and INDOOR 3). Moreover, Walls penetration loss is also considered. Adaptive modulation and Coding (AMC) schemes will be assumed in the present study for 5 MHz and 20 MHz channel bandwidth.
Abstract: In this paper, the data rate for the downlink (DL) of OFDMA-based IEEE802.16m WiMAX system and the available DL throughput as a function of distance to the Base Station (BS) are estimated for a number of propagation scenarios (OUTDOOR; INDOOR 1, INDOOR 2 and INDOOR 3). Moreover, Walls penetration loss is also considered. Adaptive modulation and Cod...
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Performance Assessment of a Downlink Two-Layer Spreading Encoded COMP MIMO OFDM System
Md. Mainul Islam Mamun,
Joarder Jafor Sadique,
Shaikh Enayet Ullah
Issue:
Volume 2, Issue 1, January 2014
Pages:
11-17
Received:
5 January 2014
Published:
20 February 2014
Abstract: In this paper, a comprehensive BER performance simulative study has been made on data transmission in a downlink coordinated multipoint wireless communication System. The COMP MIMO OFDM system under investigation implements Turbo and LDPC channel coding, Spatially multiplexing and Space-time block coding (STBC), Doubly Spreading Minimum Mean Square Error (MMSE) and Zero Forcing (ZF) signal detection (Equalizers) schemes under 16PSK and 16QAM digital modulations based on the analysis it is remarkable that the simulated system is highly effective to combat inherent interferences under Rayleigh fading channel and provides robust performance in 16QAM, MMSE channel equalization and spatial multiplexing schemes.
Abstract: In this paper, a comprehensive BER performance simulative study has been made on data transmission in a downlink coordinated multipoint wireless communication System. The COMP MIMO OFDM system under investigation implements Turbo and LDPC channel coding, Spatially multiplexing and Space-time block coding (STBC), Doubly Spreading Minimum Mean Square...
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RSS-based Near-Collinear Anchor aided Positioning Algorithm for Ill-conditioned Scenario
Senka Hadzic,
Du Yang,
Manuel Violas,
Jonathan Rodriguez
Issue:
Volume 2, Issue 1, January 2014
Pages:
18-22
Received:
15 January 2014
Published:
20 February 2014
Abstract: The conventional Received Signal Strength (RSS) based positioning algorithms such as Least Square (LS) and Weighted LS (WLS) produce significant estimation errors when the anchor nodes positions approach a collinear scenario. In this paper, we propose the CAP (Collinear Anchor aided Positioning) algorithm to provide robust positioning performance under ill-conditioned matrix conditions, whilst contributing toward overall low computational complexity. The CAP algorithm outperforms traditional approaches such as the maximum likelihood algorithm, LS and WLS among others.
Abstract: The conventional Received Signal Strength (RSS) based positioning algorithms such as Least Square (LS) and Weighted LS (WLS) produce significant estimation errors when the anchor nodes positions approach a collinear scenario. In this paper, we propose the CAP (Collinear Anchor aided Positioning) algorithm to provide robust positioning performance u...
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